write a essay on covid 19
Answers
Answer:
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The first case was identified in Wuhan, China, in December 2019.[7] The disease has since spread worldwide, leading to an ongoing pandemic.[8]
Coronavirus disease 2019
(COVID-19)
Other names
COVID, (the) coronavirus
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Transmission and life-cycle of SARS-CoV-2 causing COVID-19.
Pronunciation
/kəˈroʊnəˌvaɪrəs dɪˈziːz/
/ˌkoʊvɪdnaɪnˈtiːn, ˌkɒvɪd-/[1]
Specialty
Infectious disease
Symptoms
Fever, cough, fatigue, shortness of breath, loss of taste or smell; sometimes no symptoms at all[2][3]
Complications
Pneumonia, viral sepsis, acute respiratory distress syndrome, kidney failure, cytokine release syndrome, respiratory failure, pulmonary fibrosis, pediatric multisystem inflammatory syndrome, chronic COVID syndrome
Usual onset
2–14 days (typically 5) from infection
Duration
5 days to 10+ months known
Causes
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
Diagnostic method
rRT-PCR testing, CT scan
Prevention
Face coverings, quarantine, physical/social distancing, hand washing,[4] vaccination[5]
Treatment
Symptomatic and supportive
Frequency
124,305,890[6] confirmed cases
Deaths
2,736,298[6]
Symptoms of COVID-19 are variable, but often include fever, cough, fatigue, breathing difficulties, and loss of smell and taste. Symptoms begin one to fourteen days after exposure to the virus. Of those people who develop noticeable symptoms, 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% suffer critical symptoms (respiratory failure, shock, or multiorgan dysfunction).[9] Older people are more likely to have severe symptoms. At least a third of the people who are infected with the virus remain asymptomatic and do not develop noticeable symptoms at any point in time, but they still can spread the disease.[10][11] Around 20% of those people will remain asymptomatic throughout infection, and the rest will develop symptoms later on, becoming pre-symptomatic rather than asymptomatic and therefore having a higher risk of transmitting the virus to others.[12] Some people continue to experience a range of effects—known as long COVID—for months after recovery, and damage to organs has been observed.[13] Multi-year studies are underway to further investigate the long-term effects of the disease.[13]
Answer:
WHO | Regional Office for the Eastern Mediterranean
Arabic (عربي)French (Fr)
About COVID-19
Coronaviruses (CoV) are a large family of viruses that cause illness ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS-CoV) and Severe Acute Respiratory Syndrome (SARS-CoV). A novel coronavirus (nCoV) is a new strain that has not been previously identified in humans.
Coronaviruses are zoonotic, meaning they are transmitted between animals and people. Detailed investigations found that SARS-CoV was transmitted from civet cats to humans and MERS-CoV from dromedary camels to humans. Several known coronaviruses are circulating in animals that have not yet infected humans.
Common signs of infection include respiratory symptoms, fever, cough, shortness of breath and breathing difficulties. In more severe cases, infection can cause pneumonia, severe acute respiratory syndrome, kidney failure and even death.
Standard recommendations to prevent infection spread include regular hand washing, covering mouth and nose when coughing and sneezing, thoroughly cooking meat and eggs. Avoid close contact with anyone showing symptoms of respiratory illness such as coughing and sneezing.