Smallpox 2.0: A New Version Appeared
Smallpox has killed about 500 million people in the last 100 years. WHO – the World Health Organization – has gotten rid of the virulent variola virus, and there are…
Smallpox has killed about 500 million people in the last 100 years. WHO – the World Health Organization – has gotten rid of the virulent variola virus, and there are…