write a paragraph on covid 19
Answers
Explanation:
Corona viruses are a large family of viruses which may cause illness in animals or humans. In humans, several coronaviruses are known to cause respiratory infections ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS) and Severe Acute Respiratory Syndrome (SARS). The most recently discovered coronavirus causes coronavirus disease COVID-19.
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Explanation:
Coronavirus disease 2019 (COVID-19) is a contagious respiratory and vascular(blood vessel) disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a specific type of coronavirus responsible for an ongoing pandemic.
Common symptoms include fever, cough, fatigue, breathing difficulties, and loss of smell and taste.Symptoms begin one to fourteen days after exposure to the virus. While most people have mild symptoms, some people develop acute respiratory distress syndrome (ARDS) possibly precipitated by cytokine storm,multi-organ failure, septic shock, and blood clots. Longer-term damage to organs (in particular, the lungs and heart) has been observed, and there is concern about a significant number of patients who have recovered from the acute phase of the disease but continue to experience a range of effects—including severe fatigue, memory loss and other cognitive issues, low grade fever, muscle weakness, breathlessness, and other symptoms—for months afterwards.
COVID-19 mainly spreads through the air when people are near each other long enough,primarily via small droplets or aerosols, as an infected person breathes, coughs, sneezes, sings, or speaks. Transmission via contaminated surfaces has not been conclusively demonstrated. It can spread as early as two days before infected persons show symptoms (presymptomatic), and from those who do not show any (asymptomatic). People remain infectious for up to ten days in moderate cases, and two weeks in severe cases. The standard diagnosis method is by real-time reverse transcription polymerase chain reaction (rRT-PCR) from a nasopharyngeal swab.
Preventive measures include social distancing, quarantine, ventilation of indoor spaces, covering coughs and sneezes, hand washing, and keeping unwashed hands away from the face. The use of face masks or coverings has been recommended in public settings to minimise the risk of transmissions.
There are no proven vaccines or specific treatments for COVID-19 yet, though several are in development. Management involves the treatment of symptoms, supportive care, isolation, and experimental measures.