How do scientists find “patient zero”?

In fact, the term “patient zero” comes from a folk misinformation. In 1980, Dr. Darrow of the Centers for Disease Control and Prevention of the United States labeled a man related to multiple AIDS cases in Los Angeles as “patient O” in his investigation report (“O” is “Out-of-california” Means, it represents cases outside of California). …
Continue reading How do scientists find “patient zero”?