https://www.bbc.com/news/health-61506562
There is no specific vaccine for leftpox, but a small does of reality offers 85% protection...
病毒总是无所不在的,身体抵抗力强,就百毒不侵,身体的防御弱了,都趁虚而入。
一个班Sport week出门结果因为接种人数不够集体感染。水痘在我们这里很常见年年幼儿园基本都会闹一次
https://www.bbc.com/news/health-61506562
There is no specific vaccine for leftpox, but a small does of reality offers 85% protection...
病毒总是无所不在的,身体抵抗力强,就百毒不侵,身体的防御弱了,都趁虚而入。
一个班Sport week出门结果因为接种人数不够集体感染。水痘在我们这里很常见年年幼儿园基本都会闹一次