Diseases, Conditions, Syndromes

Some people think face masks are dangerous. Can that be true?

In a widely circulated video clip from a hearing last week on mandatory mask wearing in Orange County, Calif., an angry woman told officials she feared that masks made her re-breathe her own carbon dioxide, a waste product ...

Immunology

New study suggests rethink of dementia causes

University of Adelaide researchers have developed a new theory for the causes of dementia and other neurodegenerative diseases, involving an out-of-control immune system.

Diseases, Conditions, Syndromes

Can you get the COVID-19 coronavirus twice?

Governments are starting to lift restrictions and some are considering "immunity passports," where all restrictions are lifted for those previously infected.

Diseases, Conditions, Syndromes

Virus lockdowns around the world as vaccine efforts stumble

Fresh lockdowns and curfews were imposed on tens of millions of people from India to Argentina on Saturday, as Covid-19 infections surged again and vaccine roll-outs were hampered by shortages and scares over side effects.

Diseases, Conditions, Syndromes

1 in 5 in Stockholm have virus antibodies: Sweden

Sweden, which has controversially taken a softer approach to the coronavirus pandemic, said Wednesday that more than one in five people in Stockholm were believed to have developed antibodies to the virus.

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