2 ms·
It was a controlled infection with Smallpox, by scraping the skin with pus or scab powder from an infected person. Cowpox is what makes the smallpox vaccine.
by InDemoVeritas 7y ago
It was a controlled infection with Smallpox, by scraping the skin with pus or scab powder from an infected person. Cowpox is what makes the smallpox vaccine.
- zajio1am 7y agoYou are right.