This is the correct answer AFAIK—several lab leaks of smallpox samples after eradication caused most of the remaining samples to be consolidated into a few secure locations.
Also, the US military is not the only military to vaccinate; some countries can also give their soldiers injections without officially saying what’s inside them.
This is the correct answer AFAIK—several lab leaks of smallpox samples after eradication caused most of the remaining samples to be consolidated into a few secure locations.
Also, the US military is not the only military to vaccinate; some countries can also give their soldiers injections without officially saying what’s inside them.