South America has seen a quarter million cases this year, as climate change is a boon for the mosquitoes that spread it. A study about how the virus infects cells could help inform future treatments.
Cases of the fungus that did not respond to antifungal medicine tripled in 2021. It can be deadly, but does not seem to have adverse effects on healthy people.
It's a common dilemma in this summer of surging travel and surging COVID. If one member of a vacation party comes down with the virus, what steps can be taken to reduce the risk to others?
Some countries are moving ahead with plans to offer a fourth dose of COVID-19 vaccine. But studies are raising questions about the potential advantages of this extra booster.
Researchers in South Africa have found that people infected with omicron, on average, are less likely to end up in the hospital. But the variant may act differently here in the U.S.
On an eight-hour Emirates flight, with mask-wearing enforced, a whopping 27 coronavirus-positive people boarded the plane in Dubai. Guess how many passengers got infected?
The conventional wisdom is that it takes 15 minutes of close contact to a contagious person to put you at risk. But even a short exposure could prove problematic.
