Coronavirus disease 2019

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.

69 thoughts on “Coronavirus disease 2019”

  29. idmambawin

    I’ve been trying out a few sites lately and this one really stands out. The interface is smooth and the payouts are fast. Definitely worth a try if you want a reliable experience. Check out idmambawin for more.

    Reply
  56. 17mexcasino

    Living in Mexico City I used to struggle finding safe casinos that actually pay out on time. This site completely changed my weekend routine with fair games and amazing customer support. Every spin feels legit and the bonuses keep me coming back. 17mexcasino

    Reply
  57. pokiesopennearme

    Finding a trusted spot for online pokies used to be a total hassle but this platform makes everything effortless from deposit to withdrawal. The payout speeds are incredible and I really appreciate the responsible gaming tools built right into the dashboard. Every spin feels completely fair and the support team is always ready to assist. Check out their portal at pokiesopennearme

    Reply
  68. krbet119

    I’ve been looking for a reliable platform for a while and this one really hits the spot. The interface is smooth and the payouts are fast. Definitely recommend checking out krbet119 if you want a stress-free experience.

    Reply

Leave a Comment

Your email address will not be published.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

MAY WE HELP YOU?

Enquire about your Fitness plan, Start you Fitness journey today.

Chat Now
Scroll to Top