An officer with Customs and Border Protection Office of Field Operations reviews travel the documents of an arriving international airline pilot at Dulles International Airport in Dulles, Va., March 18, 2020. In response to the coronavirus pandemic, CBP officers have donned personal protective equipment (PPE) as they work on the frontlines of the crisis. CBP Photo by Glenn Fawcett
Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).[6] The disease was first identified in 2019 in Wuhan, the capital of Hubei, China, and has since spread globally, resulting in the 2019–2020 coronavirus pandemic.[7][8] Common symptoms include fever, cough, and shortness of breath. Other symptoms may include muscle pain, sputum production, diarrhea, sore throat, abdominal pain, and loss of smell or taste.[4][9][10] While the majority of cases result in mild symptoms, some progress to pneumonia and multi-organ failure.[7][11] As of March 25, 2020, the overall rate of deaths per number of diagnosed cases is percent; ranging from percent to 15 percent according to age group and other health problems.[5] The virus is mainly spread during close contact and via respiratory droplets produced when people cough or sneeze.[12][13] Respiratory droplets may be produced during breathing but the virus is not considered airborne.[14] [12] People may also catch COVID-19 by touching a contaminated surface and then their face.[12][13] It is most contagious when people are symptomatic, although spread may be possible before symptoms appear.[13] The virus can live on surfaces up to 72 hours.[15] Time from exposure to onset of symptoms is generally between two and fourteen days, with an average of five days.[16][17] The standard method of diagnosis is by reverse transcription polymerase chain reaction (rRT-PCR) from a nasopharyngeal swab.[18] The infection can also be diagnosed from a combination of symptoms, risk factors and a chest CT scan showing features of pneumonia.[19][20] Recommended measures to prevent infection include frequent hand washing, social distancing (maintaining physical distance from others, especially from those with symptoms), covering coughs and sneezes with a tissue or inner elbow, and keeping unwashed hands away from the face.
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Location: USA
Photo credit: © American Photo Archive / Alamy / Afripics
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