Coronavirus disease (COVID-19) is a contagious illness caused by coronavirus 2 that causes severe acute respiratory syndrome (SARS-CoV-2). The first known case was discovered in December 2019 in Wuhan, China. Since then, the disease has spread globally, resulting in a pandemic.
COVID19 symptoms vary but commonly include cough, headache, fever, exhaustion, breathing difficulty, and loss of smell and taste. You can get the best service of coronavirus disease testing via www.itsbetterhealth.com/.
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Symptoms might appear one to fourteen days after being exposed to the virus. At least one-third of those infected do not show any signs of illness. 81% of individuals who acquire symptoms evident enough to be classified as patients experience mild to moderate symptoms, whereas 14% develop severe symptoms, and 5% suffer critical symptoms (respiratory failure, shock, or multiorgan dysfunction).
Older persons are more likely to have severe symptoms. Some persons continue to have a variety of symptoms (long COVID) for months after recovery, and organ damage has been seen. COVID19 spreads when humans breathe in polluted air containing droplets and minute airborne particles bearing the virus.
The danger of inhaling these is greatest when people are nearby, although they can be breathed across greater distances, especially indoors. Transmission can also occur if infected fluids are splashed or sprayed into the eyes, nose, or mouth, and, in rare cases, through contaminated surfaces.
People can be infectious for up to 20 days after exposure to the virus and can spread it even if they do not exhibit symptoms.