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.

2,834 thoughts on “Coronavirus disease 2019”

  42. best gambling website canada, best online bingo sites united kingdom and new zealand real can you
    make money at the casino (Modesto) pokies app, or best united
    statesn online casino no deposit bonus 2021

  43. Nice share! Informasi ini sangat membantu bagi pembaca yang
    ingin mencari referensi permainan online. **Slot Demo Gratis
    2026 – Katalog Permainan Online** menawarkan koleksi yang sangat lengkap dan mudah diakses.
    Sangat direkomendasikan untuk Anda yang ingin menjelajahi game
    baru tanpa harus melakukan deposit. Terima kasih sudah berbagi!

    Kunjungi Katalog Slot Demo 2026

  46. After exploring a handful of the blog articles on your blog, I truly appreciate your way of writing a blog.
    I saved as a favorite it to my bookmark website list and will be checking back in the near future.
    Please visit my web site as well and tell me what you think.

  47. Currently it seems like Drupal is the best blogging platform available right now.

    (from what I’ve read) Is that what you’re using on your blog?

  49. 25 free spins casino new zealand, new zealandn roulette free online game and
    the largest casino in australia, or australian craps simulator online
    (Yvette) casino no deposit signup bonus

Comments are closed.