6 Sleeper-Agent Pathogens That Can Make You Sick

Your body usually does a great job defending you from all kinds of viruses, fungi, and bacteria. However, there are some pathogens out there that can hide from your immune system and stay dormant in your body, waiting for their opportunity to strike.
Hosted by: Hank Green
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Sources:
www.ncbi.nlm.nih.gov/books/NBK...
Varicella zoster:
umm.edu/health/medical/altmed/...
www.ncbi.nlm.nih.gov/pmc/artic...
Measles virus:
www.sciencemag.org/news/2015/0...
qjmed.oxfordjournals.org/conte...
pmj.bmj.com/content/78/916/63....
Human immunodeficiency virus:
www.niaid.nih.gov/topics/hivai...
www.aids.gov/hiv-aids-basics/...
cid.oxfordjournals.org/content...
Mycobacterium tuberculosis:
www.hindawi.com/journals/jir/2...
www.tbfacts.org/tb/
www.niaid.nih.gov/topics/tube...
www.ufjf.br/imunologia/files/2...
Bacillus anthracis:
www.ncbi.nlm.nih.gov/pmc/artic...
www.ncbi.nlm.nih.gov/pmc/artic...
www.microbeworld.org/interesti...
Toxoplasma gondii:
www.ncbi.nlm.nih.gov/pmc/artic...
www.cdc.gov/parasites/toxoplas...

[@Henchman_Holding_Wrench]

It's a miracle anyone's still alive. Thanks, researchers and lab workers.

[@KOKO-uu7yd]

This comment, at this time... 😭😭 Who would have thought how villanized these individuals have been, during Covid-19!

[@iloveplasticbottles]

And lab rats.

[@iloveplasticbottles]

@@KOKO-uu7yd Me. Ive seen just how easily stupidity can spread online. Its easily preventable by teaching people how to write a persuasive or argumentative essay (or any essay that requires citing credible sources).

[@KOKO-uu7yd]

@@iloveplasticbottles Point. Another prevention technique? Teach and encourage critical thinking in the kids! Public schools, usually overwhelmed, are rarely geared to allow individual thought, much less guiding individuals in real critical research and analysis. Not trying to villanize, just saying the reality I see. I think true individualism can be scary to many. There's less predictability, and less control. It also requires more individual responsibility and engagement to get a bunch of individuals working on the same page, as opposed to a bunch of people trained to respond to pre-taught values and responses. So, not sure I see any motivation for those in power to willingly alter how the majority of kids are "schooled". Pitchfork, anyone? 😭🤬✊

[@wubbalubbadubdub5867]

Thank our bodies and their "good" parasites for fighting them off most of our life

[@eternal8song]

my cat wandered over right as Hank started talking about Toxoplasmosis. i guess death comes for us all eventually.

[@SwiftTelly20]

LOL!

[@elafimilo8199]

Trying to keep you from finding out about the Great Plan.

[@davinathomas5550]

For the first time after watching this show, I actually knew all of these disease, how they work, and how they spread before I watched this episode. I actually feel like I have received a proper education somewhere.

[@darabracken-clarke1672]

I would also clarify - Toxoplasma gondii most certainly *is* treatable. It responds to a number of antimicrobials - including Septrin (Trimethoprim/Sulfamethoxazole), Pyrimethamine, Clindamycin (I think). Indeed we give prophylactic septrin to many at risk groups - in particular HIV/AIDS patients (with immunosuppression), patients on highly immunouppressive chemotherapy etc. It does require long courses of therapy then prolonged suppression.

[@brandondavidson4085]

that's the wonderful thing about the scientific process. Thing we didn't know were possible a year before are now facts

[@angelwhispers2060]

hiv immunity... sounds like a great genetic trait

[@TheMrVengeance]

Eh, if you think about it, it's not _that_ relevant. The biggest risk for get HIV is through unprotected sex with someone you don't know is healthy (ie. usually a stranger). Now considering the plethora of other STI's out there and the risk of pregnancy on top of that, unprotected sex with a stranger is still dangerous, even if you're HIV immune. Picture this at the doctor's office: _"Well, it turns out you're immune to HIV, congratulations, but you have Chlamydia and Hepatitis now."_

[@angelwhispers2060]

TheMrVengeance lol i was talking about how cool human adaptability is in general. HIV is a fairly new disease showing that human genetic adaptability can happen faster than previously thought.

[@angelwhispers2060]

Jinsi K I never said that stupidity was worth passing on. Many people exist simply because it is illegal and immoral to kill them. Capitalism has nothing to do with the stinking horde of dumb people. According to some research Humans are becoming their own domesticated species. having smaller brains and being significantly both more specialized and more dependent on others. "Two things are infinite; the universe and human stupidity. But I'm not so sure about the Universe." ~ Albert Einstein

[@shadenox8164]

Well it's possible that the trait is actually older than the virus itself. So no we can't be sure this was adaption to the virus, sometimes it's just luck.

[@angelwhispers2060]

Shade Nox still cool

[@gabrieldemourae]

I've had toxoplasmosis twice, once just after I adopted a street cat and again two years later than that, when it reactivated randomly. I was advised by doctors that it could come back at any time, or never, it could lead to blindness or remain dormant forever. Or my body may have gotten rid of it. It's impossible to know, so yay! I just live my life normally.

[@AnimeShinigami13]

well this explains a lot, when i was entering 6th grade i tested positive for exposure to tuberculosis but didn't have any symptoms. Dad gave me a choice, 6 months of the antibiotics that made me gag or two to three years in a hospital with little to no human contact. You can guess what i picked.

[@labtechsuperstar]

I've had Shingles...and like many, I didn't have the VZ vaccine, I got chicken pox the old fashioned way. Shingles hurts like mad! But something to tell your viewers is that shingles vaccine is only approved (and tested on) people over 50. I know because I asked my doctor about getting it for myself and she said no because I was too young. Also, the treatment with antiviral only works if you catch it within 72 hours. Something else I had to learn the hard way. I don't believe I got anything for pain other than OTC Advil type stuff.

[@bobman929]

I cared for a person with SSPE. He only had control of his mouth and could say about five words. He could still understand you and his brain was mostly working but he was stuck in a malfunctioning body. He had been in there 6 months. He walked himself into ED b3cause he had muscle pain and trouble moving properly. That's how quick it hits you.

[@RagerQueen]

wait, kids nowadays don't have to go through the chickenpox?? those priviliged youngsters with their improved healthcare *shakes fist*

[@JihadJared]

KEEP...IN...MIND...THAT... These kids with their supposed improved healthcare, ARE among the sickest generation in the past 100 years in this country and much of the world. I have automatically translated your comment to sarcasm, which would be masterful display of sense on your part if you'd like to go along with it. All of these pathogens have been curable without the use of vaccines by people with common sense from all over the world. I'm beginning to see video content like this is part of the reason why disease is so strong in the world, especially America.

[@RagerQueen]

JihadJared what? what are you trying to say? your comment if very confusing. are you one of those anti-vaccine people?

[@RagerQueen]

SubliminalMinstrel so they WERE an anti-vaccine person lmao. those people's logic are so unfathomable to me that I literally couldn't figure out what they were saying, thanks for clearing it up for me

[@Zeratul187]

Unrelated , but are you struggling against????

[@arthurobrien7424]

You know it's privilige and decadence that gives rise to bullshit like anit-vaccination, right? It's like when you don't remeber the Second World War, and think soldiers and nukes aren't neccessary in the 21th century. Yeah exactly like that.

[@thecraftycyborg9024]

Toxoplasmosis is why you should NEVER flush used kitty litter down the drain!! I know some brands of litter are marketed as being flushable, and there’s even a self-cleaning litter box that dumps the waste into your toilet, but that doesn’t change the fact that you could be exposing people to toxoplasmosis via the water supply by doing so.

[@thhseeking]

If flushing kitty litter down the loo could expose people to toxoplasmosis, what are you potentially exposing people to every time you take a dump? You DO use the toilet to take a dump, don't you?? 8-o

[@vivientakacs5599]

Um....don't you if you have heard of this before, but water gets many rounds of cleaning with chemicals before it is in our tap water...

[@thedavescloop]

New channel should be Scishow Bob

[@thedavescloop]

You leave comments.

[@360flyby]

scishow mel's sad .

[@thedavescloop]

Scishow Luke Perry wont last long

[@erikgustavsson9040]

Or Scishow McScishow

[@mattomanx77]

Scishowy McScishowface

[@stephanieg2887]

God microorganisms are amazing. They are so simply physiologically yet are so complex. Man they never seize to amaze me

[@GoldSrc_]

That's evolution for you, always finding a way to fuck us over :D.

[@firedrake110]

Never cease* to amaze me Seize is to either take control of something or to "enjoy" part of a seizure. Hooray for learning together =D

[@stinot875]

No, they're terrifying. (_I guess they're pretty cool too..._)

[@stephanieg2887]

firedrake110 haha thanks 😳

[@Reivivus]

Wow! My biochemistry major is good for something. I knew literally everything of this before watching the video. Well, Hank, you did study biochemistry, so we think alike.

[@loupax]

This video makes me very paranoid now

[@akbarala5287]

no need to be paranoid when you believe in Allah

[@JerehmiaBoaz]

1) You're not paranoid because the bugs really are out to get you in a sneaky way. 2) If Allah created the bugs then why should he protect you from them.

[@seabb]

So that last one is what causes old crazy cat ladies...

[@cristianverdugogalaz8725]

that could actuall be a thing

[@zerg539]

Well in rodents and birds it has been known to cause the infected to seek out cats to be eaten. So there may be some linkage between cat lovers and infection rates though its hard to proved the causation beyond the correlation.

[@plokijum]

Coouuld beee

[@edi9892]

In the simpsons it was burn-out and alcoholism...

[@StealthNinja4577]

it makes you think that's for sure. Also makes you think about all the times your cat rubs it's butt against everything in your home.

[@AlmeidaVaG6]

As a biologist, I desperately crava SciShow Life, please!

[@nonamemage6599]

AlmeidaVaG6 question how do biologist make a career out of it , do you just research and be funded or what?

[@AlmeidaVaG6]

Yeah, I know, but as a biologist, I can't afford donating :D So I was trying to appeal to the people who might No, but seriously, you might work in companies that produce medication and everything - I'm more in a molecular field of biology, my bf is an ecologist, though, and despite being like an ecological consultant to companies that are occupied with things like building or something, one can always just do research at an university. One thing that I learned between my doubts in regards to careers and now is, that if you want to do something, go for it and you'll automatically come in contact with possibilities to earn your money afterwards. Studying biology, you automatically meet your docents and professors, who, in most cases, work in research themselves, so from there on, you just need to build upon those relationships... As to research, I don't know what it's like for your area, but here in Germany, as an employee of the university, you get paid by them; your research itself is funded through different organizations, though, some even specialized on funding research projects...

[@nonamemage6599]

ok thank you

[@feynstein1004]

I crave SciShow neuroscience

[@keepsmilingboy]

I had dormant TB and they only found out bc of blood test. I had to take months of pills

[@meinbuch9458]

Then i hope you'll be cured eventually,i wish you a speedy recovery.

[@otomackena7610]

.

[@Riderfire38]

I have thorough blood test every month so as to ensure I and everyone I love remain healthy

[@akbarala5287]

the only test is your test in front of allah on judgment day

[@ijirving]

He just told you he had a blood test dude, aren't you even listening?

[@pippimocha]

I got chicken pox when I was a toddler or young child then years later when I was 11 I got shingles 😥 it was so painful and terrible, in a band around my left rib cage that felt heavily bruised but it wasn't at all.

[@pierreuntel1970]

Bri I have chicken pox when I was 4, now I'm 18 and still doesn't get shingles

[@katebattista7400]

That’s because shingles generally pops up in adulthood. In fact, many insurance companies won’t pay for a shingles vaccine if you’re under 60.

[@amberblyledge7859]

That sounds horrible. Hope you are feeling better. Never heard of it so young before. Will have to research.

[@swagboicomments5654]

My dad had shingles on his face and they thought he was gonna become blind but he recovered

[@janemiettinen5176]

I got chicken pox as a kid and shingles hit me at the tender age of 32. Right side, on the ribcage, right on that spot where bra goes.. Mine was extra itchy, but it wasnt super painful, just so I didnt want to wear my bras. And off course this just happened to go down the week my hubby had a big family reunion. I seriously entertained the idea of going there au naturel, but sanity won and I decided to grin and bear it. Party I wont forget anytime soon, but for all the wrong reasons. Everybody has told me horror stories how painful their cases were and I cant relate at all, I just scratched my side nearly raw and it was kinda uncomfortable, but it didnt hurt that much. Weird.

[@LindsayLou000]

For toxoplasmosis, you can completely prevent possible exposure via adorable poofy pets by just keeping your cat indoors and not letting them snack on wild prey 💖

[@robertabarnhart6240]

Unfortunately, some adorable poofy pets are also escape artists - my cat Morgana for one. Fortunately she knows how to find her way home.

[@LindsayLou000]

@@robertabarnhart6240 Oh my goodness, YES!! 😂 Dr. Quinn over here will body slam you to get out the door and I can't count the number of barefoot sprints I've done to keep up with her!! 😂🤦 She's very impressive! 😂

[@Deven_McKee]

Funjai? FUNJAI??? god DAMNIT Hank... you're one of them.

[@PaulPaulPaulson]

He is a fun guy

[@tomatoflight]

+Paul Paunson FUNNEEEEE JOKE

[@SomeAHole]

+tomatoflight Game Grumps comments (shitty comment section) in a Scishow comment section (terrible comment section). Shitty comment inception.

[@pipgirl7352]

my professors say it like fun-JEE >___>

[@rudresh10000]

FUN GUY :D

[@MrBasinator]

Where's the pathogen Borrelia bacteria? I have Lyme disease (which destroys people's lives... Not trying to seek compassion, just saying because it's important) and the Varicella Zoster as a co-infection. It's interesting to see the information about the Varicella Zoster.

[@melTiceTiger]

I know someone with lyme disease, and it's a lifetime infection and horrible disease. Even if you weren't seeking it, you have my compassion.

[@ComissarZhukov]

Isn't it treatable with antibiotics?

[@WwJd2tmthy1]

And also Mononucleosis aka Epstein Barr that now lives in your spinal cord. Ik this I most of my autoimmune problems. Had it at 17 and was hospitalized for 10 days with the first 24 hours on respiratory alert ( flashlight down my throat every half hour) 🤔🤔🤷‍♀️🤷‍♀️

[@iluvearth99]

Hey! could you all do something on your videos or Twitter or something where you announce new vaccines? I recently went in to get the HPV vaccine and found out I had been missing three other vaccines, some of which had multiple parts, and all of which were new. Or could you do a series or video on vaccines- where and when to get them, a little about the diseases they prevent? Thanks!

[@MrBasinator]

It's not my business, but I think you shouldn't take too many vaccines. There's some bad stuff in those cocktails they put into your body. Not saying you shouldn't get any, just investigate a bit whether you should or shouldn't take a certain vaccine.

[@Skeletron377]

+

[@massimookissed1023]

Installing immunity 3 of 17... Do not unplug or switch off your body until update process is complete.

[@ihartevil]

you can no longer have babies now just ask mike pepatonio he is a lawyer on youtube dealing with a shitload of those lawsuits you will be lucky if you dont die from cervical cancer now or worse

[@Lyysabeth]

@@ihartevil still waiting for Australia's population to die out after the highly successful mass vaccination of Gardasil....

[@Mike504]

The next Sci show the doesn't matter as long as Hank or John host most of them. With Michael covering from time to time.

[@sheagoff6009]

Just found out my second cousin hasn’t vaccinated her one year old and doesn’t plan on doing so. The fact that she isn’t going to vaccinate him and put him at risk just makes me sick to my stomach. I’m glad I got my vaccinations I don’t want polio measles whooping cough or anything else. What’s weird is that my cousin got the vaccines when she was little yet she isn’t going to get her own baby vaccinated.

[@melodymcdaniel9268]

I know, my step-sister hasn't vaccinated her one year old son and it's so gross. I feel bad for the lil guy, and unfortunately she recently got pregnant again. Unsurprisingly, she's obsessed with essential oils

[@umtimo6854]

lf Hank Green was my high school science teacher, l would have been a very clever, hardworking student.

[@Master_Therion]

To activate a sleeper agent, say these words: Longing, rusted, furnace, daybreak, seventeen, benign, nine, homecoming, one, freight car.

[@Janonas]

wat

[@TheGamingAce231]

Mission report: December 16, 1991

[@gerardo5720]

AWAITING ORDERS!

[@ruddthree8105]

Ready to comply.

[@Master_Therion]

Absence Spectrum Slow clap ;)

[@starcrafter13terran]

#1 got me for sure. 3 weeks after my 2nd covid shot, shingles flared up on my back and I had no idea what it was for awhile. I hope it was a one time thing.

[@MuzikBike]

What is the psychology of behind people making "why is there X around my anus" jokes?

[@dustycrustyhomelessman1648]

why are there "why are there x around my anus" jokes around my anus

[@LeoMRogers]

why are there Dale Stevens around my anus?

[@MasturKrafter]

Muzik Bike - Geometry Dash and stuff its a running joke where a question they answered was along the lines of "why is there hair around my anus"

[@MuzikBike]

Chicago Canuck I know, what's the PSYCHOLOGY behind it?

[@Sc4r4byte]

that comment has existed in the scishow comments section for so many ages, that once the video was finally made... it just didn't feel like the same comment section anymore without that comment. "why is there x around my anus" where x is a key aspect of the video title, is a way to make these comment sections feel like the comfort of what home used to once be.

[@alexisevans1792]

Don’t eat cat poop. Don’t eat bat soup. -Dr Suess

[@SapphireX413]

It's amazing how we're not all dead by now. The human body is incredible. Also a reminder to vaccinate my little guy 👍

[@magau3698]

Yea. Human body is amazing. Human intervention to change the bodies immune. Is not cool. They aren’t cures. They are just “treatments”. Remember that. You’re still not guaranteed anything.

[@IceMetalPunk]

SciShow Psych! PsychShow! ... please.

[@IceMetalPunk]

Dorient François That's...much better than my suggestion XD

[@MorbidEel]

SciShow PsyShow Sideshow

[@jubbajub8]

Please add scishow health! I'm a med student right now, and I'd love it if I could stay up to date with health related info! 😊

[@mpflaherty1]

No Lyme on the list (Borrelia bergdorferii)?

[@ShatterNightmare]

Don't know what to comment so this is it

[@ronniessebaggala362]

You tried!

[@Qermaq]

+

[@sultanofswingdrift3021]

sadly this it the best comment so far... I am just commenting in hope you topple the anus cancer from the top.

[@marjoriecawood199]

Great video, extremely valuable in the knowledge it holds

[@bennubyrd]

HI HANK! can you do a video on harmful chemicals and how they affect your body tissues and cells on a microscopic level?? I LOVE YOUR STYLE MAN

[@gNetkamiko]

About time you talked about Chicken Pox and Shingles. :D (an edit some time later) I had the chicken pox, and last year was so damned stressfull that it turned into Shingles. Worse, it developed on the right side of my forehead, which was painful as hell.

[@gerardvirgona5541]

Chicken pox can also occasionally cross the blood brain barrier. I had it do that & spent three month's in a coma as I've gotten older I worry about shingles as last time I had it I had epilepsy while it was active.

[@Articulate99]

Always interesting, thank you.

[@jess.6773]

Don't eat cat poop. Life advice.

[@cassieoz1702]

Most cases of toxo these days are contracted from meat

[@kezkezooie8595]

Cats carry some of their waste on their paws and claws too. They do bury their poop so get contaminated paws and claws that way. However, I do still strongly agree with your sage life advice: Don't eat cat poop.

[@kylemaybury9873]

Jess. Thank you this advice changed my life!

[@vdoxsamp7283]

Keep your house clean and free of rats. Keep cat inside. Now you can safely eat your cat.

[@alexisevans1792]

Don’t eat cat poop, don’t eat bat soup

[@Trinescity]

Hank I swear I have a bunch of mosquito bites on my leg and you just made me think for a second that I had chickenpox

[@ELYESSS]

You have terminal cancer

[@kingpopaul]

Remind me of that time I had bit marks on my leg, thought I had bedbugs but they were bites from harvest mite. Those itches for a week...

[@usmannasir8647]

thanks WebMD

[@ELYESSS]

Usman Nasir you're welcome

[@katiekat4457]

june you probably have fleas in your house. You would be better off with Chickenpox.

[@victorcontreras9138]

Great show! Very interesting and am learning a lot.

[@olafmuller4506]

this is a video of greatness!

[@phantasm1234]

Can you do one on cerebral aneurysms? I had one rupture at 19 and would love to learn more!

[@harrymanocha4533]

+Bob Le because webmd will just say it's cancer

[@DarkAion]

Bob, there's plenty of Google information on a lot of the topics SciShow covers.

[@AntshKhel]

And seriously, don't let a pregnant woman clean the litter box.

[@onixxfilth]

AntshKhel My OB-GYN even said not to clean my rat's cage. He said it's rare, especially in domesticated (pet) rats, but they can potentially carry hantavirus.

[@katiekat4457]

Antsh They are almost certainly already infected from playing in sand boxes as children anyways. Or from having cats. It only affects pregnant women who weren’t previously infected and get infected during pregnancy. But since they don’t test for it, you are right. All pregnant women should stay away from litter boxes.

[@kezkezooie8595]

Even if you're already infected with toxoplasmosis, litter boxes can carry lots of other nasties that you wouldn't want to risk being exposed to if you're pregnant - or even if you're not, when you think about it. Everyone should be cautious when cleaning litter boxes and I agree it's a definite no no for pregnant women or people with compromised immune systems.

[@thhseeking]

Firstly, don't eat cat poop. Secondly, don't eat cat poop, Thirdly, when you clean the litter box, don't touch the cat poop. Fourthly, wash your bloody hands, you grot! :) Common sense should prevail.

[@CocoIsMine]

I adore this channel.

[@angelapharmd6148]

Wow! I wish this video was up last semester! it just summarized like 4 lectures of microbiology

[@sandikoo744]

SCISHOW PSYCH SOUNDS AWESOME

[@alexmcgeachy9454]

Any one else think House M.D. would figure all these out?

[@orangeaeronaut9384]

No

[@cpob2013]

only after calling hank an idiot

[@Tfin]

Lupus and one other thing. In the final seasons, it was always the third thing.

[@coolmdj111]

+R3Testa Sarcoidosis?

[@Arxielle]

Alex McGeachy I WAS JUST THINKING OF HIM.

[@barbarahouk1983]

I sure like all of your channels. Every once in awhile I sit down and give your channels 2-5 hours of my time. The trouble is I am disabled so I only represent a like to you and advertising on KZbin is being withheld for whimsical reasons so it is possible you are not monetized. Thus I am grateful to your list of those on patreon who can send you what they can afford. I truly thank them for keeping everyone working over all these years.

[@888SpinR]

Scishow health sounds good! It sounds like knowledge that can (hopefully) be applied in each and every viewer's lives, as well as the people around them. I find a lot of Scishow stuff really interesting, but overall it doesn't change a whole lot in my life. Don't get me wrong, knowing and learning is good and can be really fun, but isn't it even better if the things you learn have direct relevance in your life and the lives of those around you as well? Patreon supporters, if you agree with me please vote for Scishow Health! :D

[@laurenchobert8985]

What about computer virus? I am afraid to go near my computer after watching the other video.

[@Darticus42]

Same haha. But if you don't click any suspicious links and you're not a high-profile target, there's a very low chance you'll have to worry about a computer virus. I remember the good ol' days where I tried playing those "shooter" ads and popups I thought were jokes and kept having to get my computer wiped. When I got older that taught me to be careful

[@massimookissed1023]

"don't click any suspicious links" How else is one supposed to find weirdly specific porn ?

[@Lotharies]

I must be really tired because when I read that I thought you were scared of getting infected by a virus From your computer

[@laurenchobert8985]

I am.

[@melTiceTiger]

HAHAHAA THIS IS THE BEST COMMENT EVER!!

[@TheVioletVideos]

Lyme Disease

[@MrBasinator]

Exactly...

[@bennubyrd]

my joints are decimated!! :(

[@luiscarlosqg]

Hank! How do you do so many videos? (And they are all good videos).

[@marissarenfro9203]

I miss you hosting SciShow...thanks for this episode!

[@kiwicolonel6864]

Funji? It's supposed to be funGi!

[@xdfgdxersrtwn]

Still doesn't sound too fun... I'll see myself out.

[@massimookissed1023]

Trying to find a suitable emogi to represent my sentiments on this...

[@FaultAndDakranon]

Kiwi Colonel If plural is funji, does that make the singular fun-jus not fungus? Has Hank been infected with gif disease?

[@TheGenericAssasin]

It's. Not. Fun-jI. It's fun-guy. *triggering intensifies*

[@OrbitalBliss]

He probably pronounces Gif, Jif. And maybe Gift, Jift for that matter. But that`s ok, we`ll still love him forever.

[@huntergoddard9307]

So he pronounces gif correctly?

[@plokijum]

+Hunter Goddard gif is a gif. Jif is apparently a brand of peanut butter.

[@AHunDread]

gjif jgif for everyone.

[@plokijum]

Ro Ad it was. gif was pronounced as jif. but gif will be pronounced as gif because it sounds better.

[@stanloonauwu6806]

my sister got shingles soon after she was born & my parents & the doctors were confused cause.....she was a baby who had never had chicken pox. turns out she got chicken pox In The Womb. 🤗 fun!

[@bastian_5975]

Judging by the fact that this is NOW in my recommended feed, it seems like KZbin wanted THIS to be a sleeper agent...

[@redbear69]

Who's watching while feeling sick. 🤒

[@davidernesto6258]

My brother got Shingles at 13, only 10 years after having chicken pox.

[@patrickmccurry1563]

People often confuse low risk for no risk, and high risk for automatic. I'm healthy, ate well, and without being obese yet developed type 2 diabetes at 38. I know morbidly obese people that eat junk yet have blood sugar levels I would kill for. Risk is not either/or, but ever changing spectra that must be evaluated carefully and personally.

[@aigledemasyaf]

I’m old/young enough to remember my classmates getting chickenpox and being worried about catching it but I also was immunized before I was 10. Yay no shingles!

[@fkrkf]

My BIL probably died from damage done to his heart by an adult infection of chicken pox. He already had a undiagnosed genetic heart condition but his father died of a heart attack as well but while he was 69 and a life long alcoholic my bil barely drank, never smoked or used drugs and was shockingly only 32. We all still his him so much!

[@Cycad97]

So that's why there are Toxoplasma gondii sporozoites around my cat's anus.

[@KayleeWhite1]

Why did *I* watch this?! -Me (a hypochondriac)

[@bingo784]

Happy Halloween!

[@demure4398]

Did anyone else imagine a scientist saying "here little aids, we won't hurt you" when hank said that they were trying to cox it out of the lymph nodes.

[@quetzalthegamer]

Why doesn't my allergy medication work?

[@Julianna.Domina]

Because the universe fucking hates us

[@massimookissed1023]

Maybe you're allergic to it. Did you think of that? Huh? Well *did* you?

[@ChelseaJeanBentley]

probably you've grown resistant to it or it is not a high enough dose for how bad your allergy symptoms are. Talk to your doctor you have options.

[@massimookissed1023]

@Lawrence, I've not really thought much about allergies since learning that I'm actually not allergic to penicillin. About the only thing I seem to be allergic to is Coldplay. I break out in sweats & festering pustules of mediocrity. Seriously, I know allergies can be deadly, & allergies to meds can make recovery problematic, and at the very least, allergies are a nuisance. If my joke helps even one person, then Yay! :) (I do think we've lost the plot somewhere, as a species, with hay-fever. Like, really? Allergic to pollen?! That stuff's been around since our great-great-grancester fish decided to go for a jog instead of a swim.)

[@massimookissed1023]

... allergic to allergy medication... - that must be like having an irony deficiency. House: "You're lacking in irony. Here, take these allergy pills. They'll make you worse, but your blood levels of irony will go up."

[@josecoelho5703]

what about herpes? and doesnt toxo affect the mice's brains?

[@anna_alexandra]

Yes, toxo affects mice brain. the mice is more receless, so it's easily eaten by a cat. and the cycle continues. but toxo also affects human brains. like driving skills. there is a lot of research done into the effects it has on us (profesor Flegr).

[@DeepStrike_lucky6]

Toxo, flips wires in rat/mice brains to make them not fear cats and may even make em seek them out for companionship. (so they can get eaten, so they can reproduce in the cat) Scientist are not sure what it does to the human brain. Their doing something we're just not sure what..... Although people heavily infected usually show signs of the "crazy cat lady syndrome". But that's a chicken or egg scenario, were they too affectionate with their cats avoiding proper sanitary practices from the start(don't kiss your cat's paws please......), or were they infected after owning so many cats for so long. Also, it's very heavily downplayed for some reason, they just say be careful around cat litter, but every single person that I know that owns cats (roughly 23) , has a cat that paws through it's litter then climbs all over food prepping surfaces, and I don't know of a single friend who cleans their food prepping surfaces BEFORE cooking, instead of after cooking.

[@ve2vfd]

I had my childhood chicken pox come back as shingles 10 years ago and holy sheet-snacks was it painful. Basically blistering in your touch sensory nerves.

[@boynebula841]

You didn't talk about malaria, some variations e.g. Plasmodium vivax and P. ovale sporozoites can stay dormant in liver cells for years, there have been cases where malarial symptoms have appeared 45 years after inoculation.

[@Im-Not-a-Dog]

I was part of a chicken pox vaccine study for Kaiser Permanente as a child, and I ended up contracting chicken pox three times through out my life. Once when I was 5, again when I was 8, and the last time when I was 13. Horrible experiences each time. P.S. No, the vaccine didn’t cause Autism. Vaccines don’t do that.

[@katiekat4457]

Not a Dog getting chickenpox a 2nd time is ridiculously rare. I have never heard of anybody who got it a 3rd time.

[@lazergurka-smerlin6561]

Last

[@celinak5062]

+Tyler Timber First's the worse second's the same last's the best of all the game.

[@belgiumball2308]

8:47 Else Vet: *Ooooooooooooooooooooooooooooooooo*cysts will resist *chemical* warfare *Ooooooooooooooooooooooooooooooooo* cyst: Na na na na

[@qweqwe700]

Oh no. When talking about the Toxoplasma Gondii, you should have started that bit by "now don't go and get rid of your cat" instead of after the explanation.

[@brb2jndett254]

There's a reason not to get a cat

[@massimookissed1023]

You should get at least 2, but 3 or more is better.

[@onixxfilth]

Brb2jNdett And definitely get someone else to clean the litterbox if you have one and get pregnant.

[@alexwang982]

why? It can’t infect you

[@basscataz]

Not psyshow, I feel it would become infected with your politics.

[@FaultAndDakranon]

basscataz What do you mean?

[@robynwaugh1446]

I had an adult case of the chicken pox at 7. All over my whole body including inside my mouth and down my throat. I missed like two weeks or school and it was brutal 😖😖 I’m glad kids don’t have to go through that anymore

[@cf5397]

I had shingles when I was actually quite young, probably 10-12 years old in that range. I don't particularly remember large amounts of pain but putting on the ointment always sucked.

[@4idan76]

sci-show life!

[@sadmac356]

Also, wash your hands WITH SOAP after handling cat poop and/or the litter box.

[@Blaynegerous]

#1000 Love you SciShow!!!!

[@thusaao]

Make a video about pathogens that change mood, if that's possible, please. Thanks!

[@gratituderanch9406]

what about Lyme disease and the many co-infections, and how they can hide in cysts during treatment, and emerge later...

[@MissTere101]

Toxo is my favourite pathogen, it's just so fascinating! Like it gets into the brains of mice and changes the neurochemical pathways so that they lose their fear response of cats making them more likely to be eaten thus completing the lifecycle.

[@TheMrVengeance]

Yes, and not only in mice. Toxo perverts and turns of fear responses, and research even hints at the fact that it can lead to suicidal and reckless behaviour in human hosts.

[@MortRotu]

@scishow An idea for a video: a list of definitions and explanations of commonly misunderstood scientific vernacular. Terms like 'law' 'theory' and 'hypothesis' for example

[@v-gc7257]

That is why I get sick. Very informative

[@fabricdragon]

important to note that studies have shown measles ALSO seems to "wipe the slate" on your immune systems memory to some extent, making you vulnerable to many illnesses you SHOULD HAVE BEEN immune to... hence the death rate form other childhood illnesses skyrocketing after a measles outbreak.

[@hez5160]

Was a military kid born pre-mid 90's. Parents weren't well off and were limited to the medical care provided by the Military. They weren't able to give me the vaccine for Chicken Pox. Unfortunately I caught it. Now as an adult I've already had Shingles twice but I'm not old enough for the Shingles vaccine. :(

[@kumaclimber]

Hey scishow, do you guys have acoustic treatment in your studio? I hear an echo and now that's all I can hear.

[@nutella1757]

I was born after the mid 90's but my sister and I both got chicken pox as children. Thanks mom.

[@FilbieTron]

What about the bacteria that causes Lyme Disease? I think it has several forms, one of which is dormant and "spore-like" and resists antibacterial treatment

[@babw16]

SciShow Health would make my life complete.

[@boozejunky]

Your knowledge and understanding of HIV is very accurate. I'm impress.

[@astrum097]

Can you do a video about how the blood brain barrier works? And what it is?

[@microbarn]

what is the process of entering spore hibernation and exciting hibernation? how does the bacterium both protect itself during extremes while also remain sufficiently receptive to recognize a good environment again?

[@blooo_blooo]

I always do a line of coke to the intro song of SciShow

[@felonious_c]

top tier comment 🤣😆

[@epicwhat001]

I say "you should start a channel called sci show bob."

[@hannah.b_765]

This is like...at least 60% of house episodes