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Lack of regular bedtime, a study shows, could have a hidden side effect

FDA to allow Pfizer-BioNTech vaccine to be stored at higher temps: NYT

6 Subtle but severe signs you have a heart problem

Asian markets will rise largely despite tech sales on Wall Street

‘Highly promising’: 1st dose of COVID vaccine cuts illness | News pandemic coronavirus

Russia had just warned WHO to the world’s first case of H5N8 influenza in humans

Covid vaccines work ‘surprisingly well’ – experts

COVID-19: Gaza begins to drive inoculation amid vaccine shortage | News pandemic coronavirus

Even a single dose of Pfizer vaccine reduces the risk of coronavirus infection, Public Health England says

Reducing Covid-19 vaccine risk penalties in some countries