Viruses
Discovery of Omicron in New York Deer Raises Concern Over Possible New Variants
White-tailed deer could become a reservoir for Covid-19, putting people and animals at risk
The Ten Best Science Books of 2021
From captivating memoirs by researchers to illuminating narratives by veteran science journalists, these works affected us the most this year
Could This Chewing Gum Reduce the Spread of Covid-19?
Preliminary results show the viral load in infected saliva was reduced viral load by 95 percent, but the research has a long way to go
In 19th-Century Gibraltar, Survivors of a Deadly Virus Used 'Fever Passes' to Prove Their Immunity
Should historic health officials' response to yellow fever outbreaks on the Iberian Peninsula serve as a model for modern pandemic management strategies?
Merck Asks FDA to Authorize Promising Covid-19 Pill
If approved, the antiviral drug could be a game-changer in the fight against the virus
Powerful Immune System Response May Be Behind 'Covid Toes'
A new study brings doctors closer to understanding the mysterious frostbite-like lesions on patients' toes and fingers
More Than 700,000 Americans Have Now Died of Covid-19
There have been over 100,000 deaths since mid-June despite widespread vaccine availability
FDA Advisory Panel Recommends Covid-19 Booster for Older and High-Risk Americans
The committee says most Americans don’t need a booster shot just yet
Some Experts Say Most Vaccinated Americans Don't Need Booster Shot Yet
A new analysis concludes vaccines still offer substantial protection against Covid-19
Why Don't Kids Tend to Get as Sick From Covid-19?
Some children have been hospitalized and some have died, but at a tiny fraction of the adult rate. Scientists are trying to find out why.
Six Important Questions About Booster Shots Answered
Experts weigh in who needs the shot first, when it should happen and how it will help
FDA and CDC Authorize Covid-19 Booster Shot for Some Immunocompromised People
Certain transplant recipients, cancer patients and others can soon get a third dose of the Pfizer-BioNTech or Moderna vaccine
Scientists Extract 15,000-Year-Old Viruses From Tibetan Glacier
Researchers say the ancient pathogens are unlikely to cause humans any harm, but 28 out of the 33 viruses found are new to science
Over 20,000 Years Ago, a Coronavirus Epidemic Left Marks in Human DNA
The oldest modern coronavirus is about 820 years old, but humanity has been fighting similar viruses for millennia
Covid-19 Delta Variant Emerges as Primary Threat Around the World
A surge of cases in the United Kingdom suggests that Delta is the most transmissible variant yet identified
This Compact PCR Test for Covid-19 Could Give Accurate Results in 15 Minutes
The speed and ease of the DASH testing platform would be a boon for screening efforts
WHO Releases Results of First Investigation Into the Origin of Covid-19
The virus was most likely first spread from a wild animal, possibly bats, to an unknown intermediate animal, possibly farm animals, and then to humans
Why U.S. Approval of the AstraZeneca Covid-19 Vaccine Is Taking So Long
An unprecedented public exchange with a data review board is the latest of AstraZeneca-Oxford vaccine’s hurdles
Why It's Important to Still Wear a Mask After Covid-19 Vaccination
Vaccinated people should still wear masks around unvaccinated individuals to prevent transmission
Why the U.S. Is Struggling to Track Coronavirus Variants
A scattered and underfunded effort at genomic sequencing has hindered the country’s ability to detect different forms of the virus
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