@@HJChinag 并不是,2019年美国FDA的确是批准了将安卡拉毒株的天花疫苗Jynneos用于预防猴痘,美国FDA还有官方文件:STN: 125678 Proper Name: Smallpox and Monkeypox Vaccine, Live, Non-Replicating Tradename: JYNNEOS Manufacturer: Bavarian Nordic A/S Indication: JYNNEOS is a vaccine Indicated for prevention of smallpox and monkeypox disease in adults 18 years of age and older determined to be at high risk for smallpox or monkeypox infection. 因为猴痘与天花相似,所以猴痘疫苗是用天花疫苗改进的。