Smallpox
Smallpox is interesting as there is no animal vector..... you have to catch it from another person (or from a lab). The virus does exist in three places in the world under "ultra high security isolation measures"..... the CDC in Atlanta, Geneva, Switzerland, and Moscow, Russia. There had been serious discussion about getting rid of those but distrust among "friends" will not allow that. Plus the thought that the virus may be needed in the future to develop vaccines or for research. The sad truth is that for over 40 years if scientists wanted to create a killer virus that could wipe out most of the world they could do it in a lab with recombinant DNA. So far they have restrained themselves..... so there is one more thing to look out for like an asteroid or whatever has us in the crosshairs today!
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