US health officials propose once-a-year COVID-19 vaccines for most Americans
The proposal comes as boosters have become a hard sell.
Omicron vs. delta: Study examines difference between two coronavirus variant symptoms
The differences between omicron and delta variant symptoms were analyzed as part of a COVD-19 infection survey.
Does delta variant make COVID-19 worse for children?
The delta variant has been identified in at least 180 countries, according to the World Health Organization.
NIH director talks about safety of vaccines against Delta variant and boosters
How effective are our vaccines against the Delta variant - and when should you get a booster shot? Dr. Francis Collins, director of the National Institutes of Health is answering some questions about the COVID-19 vaccine - and the breakthrough cases that seem to be happening more frequently.
NIH scientists develop faster, less costly COVID-19 test
NIH scientists discovered a new COVID-19 test technique that may reduce test time and cost while increasing efficiency.