Coronavirus ‘ghosts’ found lingering in the gut
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(Heidi Ledford/ Nature) — In the chaos of the first months of the coronavirus pandemic, oncologist and geneticist Ami Bhatt was intrigued by widespread reports of vomiting and diarrhoea in people infected with SARS-CoV-2.

“At that time, this was thought to be a respiratory virus,” she says. Bhatt and her colleagues, curious  …

Two years later, coronavirus evolution still surprises experts. Here’s why.
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(Priyanka Runwal/ National Geographic) — Raul Andino knows his pathogens. For more than 30 years the University of California, San Francisco researcher has studied RNA viruses, a group that includes the virus that causes COVID-19. And yet he never imagined he’d witness a pandemic of this scale in his lifetime.

“The magnitude  …

Remember COVID? Why many of us are suffering from brain fog
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(Adam Hussain/ Healthing) — As Canada reopens amid loosening pandemic restrictions, some people are finding it hard to recall words or names or compute things in their heads. Maybe you don’t remember all the steps to your morning routine anymore or your child’s teacher’s name.
 
Approximately 600 million people
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Strongest evidence yet that MS is caused by Epstein-Barr virus
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(Michael Le Page/ New Scientist) — It has long been suspected that the common Epstein-Barr virus can trigger multiple sclerosis (MS). Now, a study of 10 million military personnel in the US has shown that virtually every case of MS is preceded by infection with the virus. The finding suggests a vaccine against the Epstein-Barr   …

Covid-19: Can ‘boosting’ your immune system protect you?
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(Zaria Gorvett/ BBC News) — “Spanish Influenza – what it is and how it should be treated,” read the reassuringly factual headline to an advert for Vick’s VapoRub back in 1918. The text beneath included nuggets of wisdom such as “stay quiet” and “take a laxative”. Oh, and to apply their ointment liberally, of course.

The 1918  …