Coronavirus disease 2019

COVID-19 és contagious dissenyat causat per coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic.

Els symptoms of COVID‑19 can vary but often include fever,[7] fatigue, cough, breathing difficulties, elss of smell, i elss of taste.[8][9][10] Symptoms mai begin one to fourteen days after exposure to the virus. Amb el tret de persones que infecten el desenvolupament notificable symptoms.[11][12] Of those who develop symptoms notificable enough to be classified as patients, most (81%) develop mild to moderate symptoms (up to mild pneumonia), while 14% develop sever symptoms (dyspnea, hipoxia, or more than than develop critical symptoms (respiratory failure, xoc, or multiorgan dysfunction).[13] Older people have higher risk of developing sever symptoms. Some complications result in death. Some people continue to experience a range of effects (long COVID) per months or years after infection, i damage to organs has been observed.[14] Multi-year studies on les long-term effects són ongoing.[15]

COVID‑19 transmissió occurs when infectious particles breathed in or come into contact with the eyes, nose, or mouth. El risc és un gran nombre de persones que clouen la proximitat, però les airbornes articulades contenen el virus que remainen suspès en l’aigua i el transport per una llarga distància, particularment indoors. Transmissió 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 per up to 20 days and can spread the virus even if they do not develop symptoms.[16]

Test methods per COVID-19 per detectar virus nucleic acid inclou real-time reverse transcription polymerase chain reaction (RT-PCR),[17][18] transcription-mediated amplification,[17][18][19] and reverse transcription (RT‑LAMP)[17][18] from a nasopharyngeal swab.[20]

Several COVID-19 vaccines havien be approved and distributed in various countries, many which ha initiated mass vaccination campaigns. Altres preventives mesures inclouen physical or social distancing, quarantining, ventilació d’espais indoor, utilitza mascota o coverings en public, covering coughs i sneezes, hand washing, and keeping unwashed hands from the face. While drogs ha de desenvolupar-se per inhibir el virus, la primària treatment és aquest symptomatic, managing el disseny mitjançant supportive care, isolation, i experimental measures.