Bệnh bạch hầu nguy hiểm thế nào? Cách phòng tránh bệnh bạch hầu?

[@thithunguyen2939]

Cám ơn bs cho biết thông tin rất sớm.

[@sontran-sx4dy]

Dude, I don't usually comment, but let's just say I had to like and comment this video!

[@huynguyenquang4063]

wow, very cool !

[@nghiahoangminh7524]

1:02 what is it?

[@uyenhuynhminh6112]

0:51 It’s not a problem, it’s a ME problem!

[@ngocphanvan1478]

WOWOWOW

[@jhvj9972]

0:53 What's wrong with it?