CDC researchers are estimating that asymptomatic COVID-19 carriers account for at least half of all community transmissions. This includes carriers who never develop symptoms as well as those who later do.

“The differences in the findings are extremely important,” one researcher said. 

New research, published in ESC Heart Failure, details why heart failure patients are a high-risk group and will benefit from vaccination. 

Among the many Americans refusing to get vaccinated against COVID-19 when their turn comes up is a prominent surgeon who’s also a professional medical communicator and a Johns Hopkins public-health professor.

It’s not inconvenience or expectations of long waits that are prompting the deliberated refusals.

Academic experts in disaster response have developed an AI-based simulation model that accurately predicts ebbs and flows in traffic at drive-through vaccination stations.

Our understanding of COVID-19 has evolved greatly since its first appearance in the U.S. in early 2020. Though our knowledge remains incomplete, we’ve learned a lot about the pathophysiology of the virus—especially its unique effects on the heart.

Excess cardiac deaths increased by up to 18%, researchers have reported.