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Yet germs are present year-round — just think back to your last summer cold. So why do people get more colds, flu and now Covid-19 when it’s chilly outside?
COVID-19 often shares a lot of the same symptoms as influenza, including stuffy or runny nose, sore throat, cough, muscle aches, fatigue and fever or chills. But unlike the flu, COVID symptoms can ...
Unfortunately, severe cases of COVID-19 still happen, Dr. Russo says. With a severe case of COVID-19, a person may experience weakness, lethargy, and fever for a prolonged period of time. However ...
Long COVID or long-haul COVID is a group of health problems persisting or developing after an initial period of COVID-19 infection. Symptoms can last weeks, months or years and are often debilitating. [3]
Around 10% to 30% of non-hospitalised people with COVID-19 go on to develop long COVID. For those that do need hospitalisation, the incidence of long-term effects is over 50%. [76] Long COVID is an often severe multisystem disease with a large set of symptoms. There are likely various, possibly coinciding, causes. [76]
Nicotinamide (a form of vitamin B 3) is a potent inhibitor of proinflammatory cytokines. [8] [9] Low blood plasma levels of trigonelline (one of the metabolites of vitamin B3) have been suggested for the prognosis of SARS-CoV-2 death (which is thought to be due to the inflammatory phase and cytokine storm).
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The COVID-19 vaccines are widely credited for their role in reducing the severity and death caused by COVID-19. [ 128 ] [ 129 ] As of March 2023, more than 5.5 billion people had received one or more doses [ 130 ] (11.8 billion in total) in over 197 countries.