Wikipedia:VideoWiki/Coronavirus disease 2019
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Most cases are mild and do not need hospital care, however, some COVID infections will lead to viral pneumonia and the failure of the respiratory or other body systems. For those cases, hospitalization is frequently needed for breathing support, with oxygen or a mechanical ventilator, along with therapy to support the circulatory system, kidneys, and other body systems.
The virus spreads easily and sustainably between people, more efficiently than influenza, and less easily than measles. It is mainly spread during close contact, and by small droplets produced during coughing sneezing or talking.
During close contact, 1 to 2 metres or 3 to 6 feet, people catch the disease from breathing in contaminated droplets.
When the contaminated droplets fall to floors or surfaces, less commonly, they can remain infectious, if people touch contaminated surfaces and then their eyes, nose or mouth with unwashed hands. Some people have been infected and recovered without showing symptoms, and such people may be able to spread COVID-19.
The standard method for diagnosis of active COVID-19 infection is with a swab of the back of the nose and back of the throat, which is then tested for the virus using a reverse transcription polymerase chain reaction (or PCR) process.
The recommended measures to prevent infection include frequent hand washing, social distancing, covering coughs and sneezes with a tissue or inner elbow, and keeping unwashed hands away from the face. Social distancing involves maintaining a physical distance from others and has been a key tool used by communities to slow down the intensity of the pandemic.
The use of a surgical mask is recommended for anyone suspected of having the virus to prevent the spread of infected droplets. Caregivers should also use masks, faceshields, and other personal protective equipment when caring for people with active COVID-19, and high filtration masks, like the N95, for any activities that may generate aerosol from an infected patient. Recommendations for, and against mask use by the general public, vary by country and region.
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