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LONDON, Nov 9 (Reuters) - Many COVID-19 survivors are likely to be at greater risk of developing mental illness, psychiatrists said on Monday, after a large study found 20% of those infected with the coronavirus are diagnosed with a psychiatric disorder within 90 days.

Anxiety, depression and insomnia were most common among recovered COVID-19 patients in the study who developed mental health problems, and the researchers also found significantly higher risks of dementia, a brain impairment condition.

(CNN)President-elect Joe Biden and Vice President-elect Kamala Harris' newly appointed Transition Covid-19 Advisory Board is led by established public health officials and staffed by a mix of doctors and current and former government officials, some with high-profile media visibility.

(CNN)Scientists Ugur Sahin and Ozlem Tureci have dedicated their lives to the field of oncology and infectious diseases, and spent years pioneering personalized immunotherapy treatments for cancer.

The reopening of restaurants, gyms and hotels carries the highest danger of spreading Covid-19, according to a study that used mobile phone data from 98 million people to model the risks of infection at different locations.

A nasal antiviral created by researchers at Columbia University Vagelos College of Physicians and Surgeons blocked transmission of SARS-CoV-2 in ferrets, suggesting the nasal spray also may prevent infection in people exposed to the new coronavirus.

The compound in the spray—a lipopeptide developed by Anne Moscona, MD, and Matteo Porotto, PhD, professors in the Department of Pediatrics and directors of the Center for Host-Pathogen Interaction—is designed to prevent the new coronavirus from entering host cells.

Mutations in coronavirus have triggered culls of millions of farmed mink in Denmark.

Part of the country has been put under lockdown after Danish authorities found genetic changes they say might undermine the effectiveness of future Covid-19 vaccines.

More than 200 people have been infected with mink-related coronavirus.

And the UK has imposed an immediate ban on all visitors from Denmark amid concerns about the new strain.

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It has been one of the most baffling aspects of the Covid-19 pandemic. Healthy young men and women have become infected with the virus and developed life-threatening side effects. But at the same time, many of their contemporaries have simply shrugged off the condition.

Unknown factors are clearly leaving some people vulnerable to the pandemic’s worst effects even though some of them are young, are not overweight and do not suffer from other obvious health problems. Scientists think that tiny genetic differences are causing some to be struck down while many others are spared.

Slovakia has begun an ambitious project to test everyone over the age of 10 for Covid-19, but the president has said she thinks the idea is "unfeasible".

The operation to test four million people is to last over two weekends.

Infections have soared in Slovakia and officials argue the only alternative would be a total lockdown.

President Zuzana Caputova called for a rethink of the plan after armed forces chiefs said there were not enough trained health workers to carry it out.

Europe is now battling a second surge of COVID-19 cases, and many worry it could be worse than the first.

The White House science office listed "ending the COVID-19 pandemic" as the top accomplishment of President Trump's first term, even as the U.S. has set records for new daily infections and numerous hospitals across the country are stretched to their breaking points.