Brig. Il Gen. Joane Mathews, vice generale aggiunto per l'esercito del Wisconsin, risponde alle domande dei media durante una conferenza stampa del marzo 12 presso il state Emergency Operations Center di Madison, Wisconsin. All'inizio del giorno in cui Evers ha dichiarato un'emergenza sanitaria in risposta al coronavirus COVID-19. Wisconsin Department of Military Affairs foto di Vaughn R. Larson

• Collaboratore: American Photo Archive / Alamy Foto Stock
• ID dell’immagine: 2BH04B3
• Dimensioni dei file: 77,9 MB (1,4 MB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 6400 x 4256 px | 54,2 x 36 cm | 21,3 x 14,2 inches | 300dpi
• Data acquisizione: 1 gennaio 2014
• Ubicazione: USA

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Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).The disease was first identified in 2019 in Wuhan, the capital of China's Hubei province, and has since spread globally, resulting in the ongoing 2019–20 coronavirus pandemic. Common symptoms include fever, cough, and shortness of breath. Other symptoms may include muscle pain, sputum production, diarrhea, sore throat, loss of smell, and abdominal pain. While the majority of cases result in mild symptoms, some progress to pneumonia and multi-organ failure.As of 28 March 2020, the overall rate of deaths per number of diagnosed cases is 4.6 percent; ranging from 0.2 percent to 15 percent according to age group and other health problems.In comparison, the overall mortality rate of the 1918 Spanish Flu were approximately 3% to 5%. The virus is spread mainly through close contact and via respiratory droplets produced when people cough or sneeze.[15][16] Respiratory droplets may be produced during breathing but the virus is not generally airborne. People may also contract COVID-19 by touching a contaminated surface and then their face. It is most contagious when people are symptomatic, although spread may be possible before symptoms appear. The virus can survive on surfaces up to 72 hours. Time from exposure to onset of symptoms is generally between two and fourteen days, with an average of five days. The standard method of diagnosis is by reverse transcription polymerase chain reaction (rRT-PCR) from a nasopharyngeal swab.The infection can also be diagnosed from a combination of symptoms, risk factors and a chest CT scan showing features of pneumonia. Recommended measures to prevent infection include frequent hand washing, social distancing (maintaining physical distance from others, especially from those with symptoms) .

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