Most COVID transmission is still asymptomatic

ABC News

Some 60% of virus spread starts with those who have no symptoms. A cough or sneeze in the checkout line at the grocery store may elicit fear of COVID-19, but that maskless person quietly sitting next to you on the subway could pose just as much of a threat, public health experts say. Dr. Helen Chu, infectious disease physician at the University of Washington School of Medicine, was featured. 

A COVID mystery: Some people never get sick even after being exposed to the virus

Komo News

A big mystery of the COVID-19 pandemic that researchers are baffled by is that some people are exposed to the virus but never get sick even as others are diagnosed with it multiple times, despite being vaccinated. Researchers say figuring out why that happens is an important question, and they're working to find the answer. Dr. Michael Gale, professor of global health, was quoted. 

Climate change could introduce humans to thousands of new viruses

Popular Science

Epidemiologists have focused a huge amount of attention on hunting down the moment those viruses made the interspecies leap. Which bats? When? But there’s another, broader question to be asked: Why do certain mammals bump into each other at all? And are there forces that make it more likely that a diseased bat ends up in a place where it can infect people? Kristie Ebi, professor of global health, is quoted.