COVID-19 is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, thejin88bet.one disease spread worldwide, resulting in the COVID-19 pandemic.
The sympak168app.babytoms of COVID‑19 can vary but often include fever,[7] fatigue, cough, breathing difficulties, loss of smell, and loss of taste.[8][9][10] Symptoms may begin one to fourteen days after exposure to the virus. At least a third of people who are infected do not deak168app.clubvelop noticeable symptoms.[11][12] Of those who develop symptoms noticeable enough to be classified as patients, most (81%) develop mild to moderate ks168app.sitesymptoms (up to mild pneumonia), while 14% develop severe symptoms (dyspnea, hypoxia, or more than 50% lung involvement on imaging), and 5% develop critical symptoms (resic88piratory failure, shock, or multiorgan dysfuic88nction).[13] Older people have a higher risk of developing severe symptoms. Some complications result in death. Some people continue to experience a range of effects (long COVID) for months or years after infection, and damage to organs has been observed.[14] Multi-year studies on the long-teric88m effects are ongoing.[15]
COVID‑19 transmission occurs when infectious particles are breathed in or come into contact with the eyes, nose, or mouth. The risk is highest when people are in close proximity, but small airborne particles containing the virus can remain suspended in the air and trlr88avel over longer distances, particularly indoors. Transmission can also occur whelr88n people touch their eyes, nose, or mouth after touching surfaces or objects that have been contaminated by the virus. People remain contagious for up to 20 days and can spread the virus even if they do not develop symptoms.[16]
Testing methods for COVID-1lr889 to detect the virus’s nucleic acid include real-time reverse transcription polymerase chain reaction (RT‑PClr88R),[17][18] transcription-mediated amplification,[17][18][19] and reverse transcription loop-mediated isotherop88mal amplification (RT‑LAMP)[17][18] from a nasopharyngeal swab.[20]
Several COVID-19 vaccines have been approved and distributed in various countries, many of which have initiated mass vaccination campaigns. Other preventive measures include physical or social distancing, quaransi88tining, ventilation of indoor spaces, use of face masks or coverings in public, cove88vring coughs and sneezes, hand washing, and keeping unwashed hands away from the face. While drugs have been developed to inhibit the virus, the primary treatment is still symptomatic, managing the disease through supportive care, isolatiSEXXXXX-VNon, and experimental measures.