With humankind focused on surviving the SARS-CoV-2 virus, I find it oddly reassuring to think about other deadly foes we’ve faced. Some, like the virus that caused the 1918 influenza pandemic, waned as people developed immunity. Others, like HIV, continue to threaten, killing 690,000 people worldwide last year.
It’s been more than 40 years since doctors in the United States started seeing young men become terribly ill with rare cancers and pneumonia.
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