2019–20 Coronavirus Outbreak

The 2019–20 coronavirus outbreak is an ongoing epidemic of coronavirus disease 2019 (COVID-19), caused by the SARS-CoV-2 virus.[5] It was first identified in December 2019 in Wuhan, China.[6][7][8] As of 28 February 2020, more than 83,000 cases have been confirmed in over 50 countries, of which 8,000 were classified as serious.[4] At least 2,800 deaths have been attributed to the disease,[4] surpassing that of the 2003 SARS outbreak.[9] More than 36,000 people have since recovered.[4]

The virus primarily passes from one person to others via respiratory droplets produced from the airways, often during coughing or sneezing.[10][11] The time between exposure and symptom onset is typically between two and fourteen days.[12] Symptoms may include fever, cough, and breathing difficulties.[13] Complications may include pneumonia and acute respiratory distress syndrome. There is no vaccine or specific antiviral treatment (although research is ongoing); efforts often aim at managing symptoms and supportive therapy.[14] Hand washing, maintaining distance from people who are coughing, and avoiding touching one’s face are recommended to prevent the disease.[15] Anyone who is suspected of carrying the virus is advised to monitor their health for two weeks, self-isolate, wear a surgical mask, and seek medical advice by calling a doctor before visiting a clinic.[12][10] Continue reading “2019–20 Coronavirus Outbreak”

Coronavirus disease 2019

Coronavirus disease 2019 (COVID-19) is an infectious disease caused by SARS-CoV-2,[8] a virus closely related to the SARS virus.[9][10][11] The disease is the cause of the 2019–20 coronavirus outbreak.[12][13] It is primarily spread between people by small droplets from infected individuals when they cough.[14][15] Time from exposure to onset of symptoms is generally between 2 and 14 days.[16][17] Hand washing, maintaining distance from people who are coughing, and not touching one’s face are recommended to prevent the disease.[18] It is recommended to cover one’s nose and mouth with a bent elbow when coughing.[18]

People may have few symptoms or develop fever, cough, and shortness of breath.[7][19][20] Cases can progress to pneumonia and multi-organ failure.[12][13] There is no vaccine or specific antiviral treatment, with management involving treatment of symptoms, supportive care, and experimental measures.[21] The case fatality rate is estimated at between 1% and 3%.[22][23] Continue reading “Coronavirus disease 2019”


Coronaviruses are a group of viruses that cause diseases in mammals and birds. In humans, coronaviruses cause respiratory tract infections that are typically mild, such as the common cold, though rarer forms such as SARS, MERS and COVID-19 can be lethal. Symptoms vary in other species: in chickens, they cause an upper respiratory tract disease, while in cows and pigs they cause diarrhea. There are no vaccines or antiviral drugs to prevent or treat human coronavirus infections. Continue reading “Coronavirus”