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.

1,982 thoughts on “Coronavirus disease 2019”

  3. win money instantly usa no deposit, free spins
    no deposit casinos canada and casino bonus usa, or casinos biggest gambling game in the
    world (Jerilyn) victoria bc
    united kingdom

  9. best usa online casinos that payout, bet365
    free casino usa and free spins real money no deposit united kingdom,
    or online casino united states legal real money

    Feel free to surf to my web-site :: site (Gertrude)

  38. Incredible! This blog looks just like my old one! It’s on a entirely different
    topic but it has pretty much the same page layout and design. Excellent choice of
    colors!

  40. top new united statesn online casino, uk slots sites and
    best casino no deposit codes (Georgia) online casino payout
    uk, or play online pokies usa

  41. no deposit bonus casinos canada, blackjack mulligan uk and mobile poker sites usa, or online casino canada free bonus

    Also visit my web blog gambling college campuses, Suzette,

  47. are top online pokies and casinos united kingdom open, where can united statesns play roulette online and pokies real money australia,
    or dollar 5 deposit online is black hawk casino open now (Glinda) united kingdom

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.