Coronavirus
Latest about Coronavirus
![illustration of a backwards N shaped molecule, shown in purple, and two small red, round enzymes attached at its center](https://cdn.mos.cms.futurecdn.net/AohEELiF33qYCTfbpJ3SwC-320-80.jpg)
Brain fog in long COVID may be linked to blood clots
By Nicoletta Lanese published
A new study links long-COVID-related brain fog to two blood-clotting proteins.
![A coronavirus particle depicted in bright red and yellow binds to a human cell depicted in light yellow](https://cdn.mos.cms.futurecdn.net/ZTYPhZUuAy6fk5QA3z5454-320-80.jpg)
Coronavirus variants: Facts about omicron, delta and other SARS-CoV-2 mutants
By Nicoletta Lanese, Rachael Rettner last updated
Here's a look at the science behind SARS-CoV-2 variants, including the now-dominant omicron and its many defunct relatives.
![illustration of a bright green coronavirus particle floating in front of a sea of additional particles](https://cdn.mos.cms.futurecdn.net/BsWeqZnqxrNEGraemMZDfM-320-80.jpg)
COVID subvariant EG.5 and its spawn 'Eris' now dominant in the US
By Nicoletta Lanese published
An omicron subvariant called EG.5 has become the most prevalent version of SARS-CoV-2 in the U.S. by a narrow margin, according to CDC estimates.
![Close up of woman picking her nose](https://cdn.mos.cms.futurecdn.net/P5xwFKzubuSshDRMv5C5HP-320-80.jpg)
Can picking your nose raise the risk of catching COVID-19? The answer may (not) shock you
By Emily Cooke published
Public health measures were ramped up during the pandemic, but a new study in health care workers suggests one disease-spreading habit may have been overlooked.
![A woman wearing blue latex gloves administering a vaccine to a man](https://cdn.mos.cms.futurecdn.net/GqJaUivwxMQihabB8JxZKQ-320-80.jpg)
'Excess deaths' tied to COVID have plummeted in America — what does that mean?
By Kiley Price published
Data shows that America's excess death rates have mostly returned to pre-pandemic levels, reflecting the end of the public health crisis, experts say.
![Close up of a hand holding up a positive covid test, th type of lateral flow test you'd take at home](https://cdn.mos.cms.futurecdn.net/iucX4CENxmiiBg7SGJpqt3-320-80.jpg)
Genetic quirk could explain why not everyone shows symptoms of COVID-19
By Emily Cooke published
In a large cohort of people infected with SARS-CoV-2, a specific gene variant was more common in people who didn't show symptoms, compared to those who did.
![three people in surgical masks, one in a car and two standing nearby, are outside the entrance to the wuhan institute of virology, a multistory building with reddish walls and its name over the door](https://cdn.mos.cms.futurecdn.net/e4FdRHETUNnMfrSrZDWQu8-320-80.jpg)
Declassified US intelligence report finds no evidence of coronavirus 'lab leak' from Wuhan institute
By Nicoletta Lanese published
A declassified U.S. intelligence report further refutes the idea that SARS-CoV-2 "leaked" from the Wuhan Institute of Virology.
![small round white tablets spilling out of a jar onto a pink background](https://cdn.mos.cms.futurecdn.net/qfRRre4X8HpbRdTM2KknZ9-320-80.jpg)
Metformin cuts risk of long COVID by 40% in patients with obesity, trial suggests
By Anna Demming published
A new study shows metformin can diminish risk of developing long COVID by more than 40% in overweight and obese patients.
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