Coronavirus disease 2019

Posted on by

COVID-19 is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic.

The symptoms 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 develop noticeable symptoms.[11][12] Of those who develop symptoms noticeable enough to be classified as patients, most (81%) develop mild to moderate symptoms (up to mild pneumonia), while 14% develop severe symptoms (dyspnea, hypoxia, or more than 50% lung involvement on imaging), and 5% develop critical symptoms (respiratory failure, shock, or multiorgan dysfunction).[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-term 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 travel over longer distances, particularly indoors. Transmission can also occur when 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-19 to detect the virus’s nucleic acid include real-time reverse transcription polymerase chain reaction (RT?PCR),[17][18] transcription-mediated amplification,[17][18][19] and reverse transcription loop-mediated isothermal 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, quarantining, ventilation of indoor spaces, use of face masks or coverings in public, covering 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, isolation, and experimental measures.

1,822 thoughts on “Coronavirus disease 2019”

  13. is online gambling banned in australia, australia gambling winnings taxable and free casino spins
    uk, or online roulette for real money usa

    Here is my web blog craps yoyo (Shanice)

  24. online keno for real money australia, best online casino australia no deposit
    bonus and how many casino are in australia, or david sheridan casino (Christy)
    in christchurch new zealand

  36. gold coast casino australia, best australian casino sites and best slot sites australia, or poker sites
    australia 2021

    Here is my web-site highest number on a roulette wheel in french (Maryanne)

  40. free money online pokies canada, 2021 no deposit bonus codes nz and free
    bonus no deposit roulette usa, or united kingdom poker 95 download

    Also visit my page abstaining from gambling [Melisa]

  43. eur 5 deposit casino uk, free slots to play for fun uk and australian online no deposit monte carlo casino limits (Ines), or free chips
    no deposit bonus united states

  45. love gambling (Isis) illegal usa, casino united kingdom chance and hausaos dojo slot online real money no deposit bonus, or usa only online casinos

  46. 5dollar deposit casino united states, real money slots free spins usa and play aristocrat pokies things to know about online gambling (Joycelyn) australia, or gambling in ontario united states

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.