2,460 results
2,460 results for: mutations
- Health & Medicine
As the COVID-19 pandemic evolves, we answer 7 lingering vaccine questions
As U.S. vaccination efforts shift to get shots to the hard-to-reach, we take a look at some big questions about vaccines that still remain.
- Health & Medicine
AstraZeneca says its COVID-19 vaccine is 79 percent effective in a U.S. trial
The shot was 80 percent effective at preventing illness in people 65 and older and prevented severe disease and hospitalization.
- Health & Medicine
How India’s COVID-19 crisis became the worst in the world
Scientists say a laxed attitude toward masking and social distancing plus the rise of new variants may have fueled India’s coronavirus surge.
- Health & Medicine
The surge in U.S. coronavirus cases shows a shift in who’s getting sick
Younger, unvaccinated people are a rising share of COVID-19 cases, raising concerns anew that lack of vaccine access may hit minority populations hard.
- Health & Medicine
Global inequity in COVID-19 vaccination is more than a moral problem
Wealthy countries are vaccinating at much higher rates than low-income countries. Such inequities could ultimately prolong the pandemic for all.
- Health & Medicine
How coronavirus variants may drive reinfection and shape vaccination efforts
New coronavirus variants could infect people who have already recovered from COVID-19 or been vaccinated, but there are still many unknowns.
- Health & Medicine
How coronavirus variants may pose challenges for COVID-19 vaccines
Some coronavirus mutations may make vaccines less effective, but the immune system is multifaceted and vaccines can be updated.
- Health & Medicine
We still don’t know for sure where the coronavirus came from. Here’s why
A year into the pandemic, we know the virus probably came from bats, but how and why it leaped to humans are still unknown.
- Genetics
The oldest animal DNA ever recovered reveals mammoths’ evolution
Mammoths evolved to handle the cold over hundreds of thousands of years and North America may been home to a hybrid species, a new study finds.
- Health & Medicine
Could delaying a second vaccine dose lead to more dangerous coronavirus strains?
Some experts worry extending the time between vaccine doses could help the virus evolve in potentially harmful ways, but viral evolution is complex.
- Health & Medicine
COVID-19 vaccines may be ready for teens this summer
Vaccinating children against COVID-19 is a crucial step towards reaching herd immunity and returning to pre-pandemic life.
- Genetics
Some identical twins don’t have identical DNA
Mutations arising early in development may account for genetic differences between identical twins.
