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.

2,646 thoughts on “Coronavirus disease 2019”

  22. 10 free spins no deposit casino uk, best no deposit bonus trump
    casino (Lauri) usa and where can i
    play poker online for real money in australia, or canadian online slot
    machines

  23. best pokies app united kingdom, united states no cash deposit casino
    codes, Russell, online
    and bet365 play new zealandn roulette online uk, or top casino in united states for
    real money

  25. play online poker united states, canada online when did megastar casino open (Clarice) no deposit and canada online gambling laws, or free poker machines online united states

  26. top 10 casino in canada, canadian poker admiral and age of gods
    slots uk, describe what responsible gambling programs
    or strategies a casino might implement (Jeannine)
    new poker sites uk 2021

  31. australian online casino apps, fastest paying casino usa and omni slots united states,
    or real online australian pokies

    my homepage hitman 3 roulette mod [Velva]

  32. virtual poker with friends uk, free poker chips no deposit
    uk and hausaos dojo slot ez baccarat online free (Kerstin) real money no deposit bonus, or legal age for gambling in australia

  37. the top online pokies and casinos in united states legit, online
    united statesn roulette simulator and no deposit
    free bonus bgo group casinos (Bryan) usa, or australian casino free
    chips

  42. new online canadian casino, casino in victoria australia and usa mobile casino bonus, or top ten slots usa

    My site what is the purpose of gambling (Ismael)

  44. new united statesn no deposit bonus dragon quest xi casino prizes worth it
    (Kassie) 2021, do you have to pay taxes on gambling winnings in australia and
    usa slot festival, or bet365 craps strategies usa

  46. 10 free spins no deposit casino to byron bay (Vonnie) uk,
    free spins pokies in canada and united statesn no deposit casino bonus
    codes, or in united statesn roulette the wheel has 38 numbers

Comments are closed.