Recent Contributions

• Coronavirus FAQ: I got COVID. Then I got it again. What's the deal with reinfection?
• Discovery of HIV variant shows virus can evolve to be more severe — and contagious
• COVID testing FAQ: When to test, what kind of test to use and what your results mean
• Toilet signs give the scoop on pee and poop
• Oh, the places you'll go: Toilet signs try to help
• Some bacteria are becoming 'more tolerant' of hand sanitizers, study finds