Most of the major coronavirus variants have been first detected outside of the United States. However, experts say that may not be because the virus isn't mutating in the U.S., but rather because the country's viral surveillance system lacks the ability to quickly detect variants.
Amid worldwide omicron surges, many scientists who were not initially convinced of the necessity of booster shots for all adults are reconsidering their policy stances—even as a new study indicates that any combination of vaccine brands provides notable additional protection.
A new study from South Africa suggests the omicron variant is much more likely than other variants to reinfect those who previously had Covid-19. Here's what experts say the finding could mean for both natural and vaccine-induced immunity against the coronavirus.
To increase respect and understanding for their profession, the national association for physician assistants formally replaced "assistant" with "associate," transforming the group into the American Academy of Physician Associates, Jordan Rau writes for Kaiser Health News.
Semaglutide, a medication that can help regulate appetite, may lead to a "new era" in anti-obesity treatments after several large-scale clinical trials found it led to significant weight reductions for obese and overweight participants.