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Michaeleen Doucleff

Some countries are moving ahead with plans to offer a fourth dose of COVID-19 vaccine. But studies are raising questions about the potential advantages of this extra booster.
Now researchers in the U.K. have the first estimates for how long a third shot of the Pfizer vaccine will last. The findings are mixed.
Vaccines still do a solid job at warding off hospitalization from omicron. So if you’re young and healthy, why get a booster? Scientists explain how boosters help and the best timing to get one.
A new study from the University of Hong Kong offers preliminary information that could explain why this new coronavirus variant may be more transmissible.
There’s serious concern about the effectiveness of vaccines against the omicron strain. But there’s also reason to be hopeful — especially for those who’ve had a booster.
Pandemic predictions have been made — and then things would change. But based on models and studies (including a 1980s test that squirted virus up human noses), researchers have a new endgame thesis.
A leaked document compared it to the highly contagious children’s disease. Data does not support this claim. Nonetheless, the delta variant is likely the world’s most contagious respiratory disease.
New research from China suggests people infected with the delta variant have, on average, about 1,000 times more virus in their respiratory tracts than those infected with the original strain.
The term is a reference to two particular mutations in SARS-CoV-2. But the variant in India could carry additional mutations.
The coronavirus most likely did not originate at the Huanan Seafood Wholesale Market in Wuhan, says a WHO report due tomorrow. But critics are questioning the independence of the investigative team.
In some cultures kids roll their eyes when asked to do chores. In others, they’ll pitch in without even being asked. Researchers have identified two key practices to raise helpful children.
One day you’re worrying about the regular old coronavirus. Then — seemingly out of the blue — there are variants. Worrisome variants! How did they come to be? And why are they likely more contagious?
There’s evidence that certain vaccines boost the body’s defense against many kinds of illness. Scientists are investigating whether this benefit extends to protection from COVID-19.
That’s what a UNICEF official calls the conflict in Yemen. And escalating violence in a key port city is jeopardizing aid to hundreds of thousands of starving children.
Talking to a device that talks back can be entertaining and educational for children. But psychologists say children can develop relationships with these devices that can be different than adults.
For the first time, scientists have carefully analyzed all the critters in a kitchen sponge. There turns out to be a huge number. Despite recent news reports, there is something you can do about it.
When microbiologist Sheng Chen and his team sequenced the microbes found in the pneumonia infections, they were shocked at what they saw.
Each year more than 600,000 babies die of sepsis. Researchers have found a simple way to prevent it: Feed babies probiotic bacteria that are common in kimchi, pickles and other fermented vegetables.