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United States President Donald Trump Slams China COVID-19 with Wuhan Lab|US President Trump Speech

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The 2019–20 coronavirus pandemic is an ongoing pandemic of coronavirus disease 2019 (COVID‑19) caused by severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2). The outbreak was identified in Wuhan, China, in December 2019.[4] The World Health Organization declared the outbreak a Public Health Emergency of International Concern on 30 January, and a pandemic on 11 March.[6][7] As of 2 May 2020, more than 3.35 million cases of COVID-19 have been reported in 187 countries and territories, resulting in more than 238,000 deaths. More than 1.05 million people have recovered.[5]Health authorities in Wuhan, Hubei, China, reported a cluster of viral pneumonia cases of unknown cause on 31 December 2019,[323][324] and an investigation was launched in early January 2020.[325] These cases mostly had links to the Huanan Seafood Wholesale Market and so the virus is thought to have a zoonotic origin.[326] The virus that caused the outbreak is known as SARS‑CoV‑2, a newly discovered virus closely related to bat coronaviruses,[327] pangolin coronaviruses,[328][329] and SARS-CoV.[330] The scientific consensus is that COVID-19 has a natural origin.[331][332]

The earliest known person with symptoms was later discovered to have fallen ill on 1 December 2019, and that person did not have visible connections with the later wet market cluster.[333][334] Of the early cluster of cases reported that month, two-thirds were found to have a link with the market.[335][336][337] On 13 March 2020, an unverified report from the South China Morning Post suggested a case traced back to 17 November 2019 (a 55-year-old from Hubei) may have been the first infection.[338][339]




Analysis by age in China indicates that a relatively low proportion of cases occur in individuals under 20.[351] It is not clear whether this is because young people are actually less likely to be infected, or less likely to develop serious symptoms and seek medical attention and be tested.[352]

Initial estimates of the basic reproduction number (R0) for COVID-19 in January were between 1.4 and 2.5,[353] but a subsequent analysis has concluded that it may be about 5.7 (with a 95 percent confidence interval of 3.8 to 8.9).

The virus is primarily spread between people during close contact,[c] often via small droplets produced by coughing,[d] sneezing, or talking.[8][9][11] The droplets usually fall to the ground or onto surfaces rather than remaining in the air over long distances.[8] People may also become infected by touching a contaminated surface and then touching their face.[8][9] On surfaces, the amount of virus declines over time until it is insufficient to remain infectious, but it may be detected for hours or days.[8][11][12][13] It is most contagious during the first three days after the onset of symptoms, although spread may be possible before symptoms appear and in later stages of the disease.[14]
Common symptoms include fever, cough, fatigue, shortness of breath, and loss of smell.[8][15][16] Complications may include pneumonia and acute respiratory distress syndrome.[17] The time from exposure to onset of symptoms is typically around five days, but may range from two to fourteen days.[18][19] There is no known vaccine or specific antiviral treatment.[8] Primary treatment is symptomatic and supportive therapy.[20]

Recommended preventive measures include hand washing, covering one's mouth when coughing, maintaining distance from other people, wearing a face mask in public settings, and monitoring and self-isolation for people who suspect they are infected.[8][21] Authorities worldwide have responded by implementing travel restrictions, quarantines, curfews and stay-at-home orders, workplace hazard controls, and facility closures. Many places have also worked to increase testing capacity and trace contacts of infected persons.

The pandemic has caused severe global socioeconomic disruption,[22] including the largest global recession since the Great Depression.[23] It has led to the postponement or cancellation of sporting, religious, political and cultural events,[24] widespread supply shortages exacerbated by panic buying,[25][26] and decreased emissions of pollutants and greenhouse gases.[27][28] Schools, universities and colleges have closed either on a nationwide or local basis in 194 countries, affecting approximately 98.5 per cent of the world's student population.[29] Misinformation about the virus has spread online,[30] and there have been incidents of xenophobia and discrimination against Chinese people and against those perceived as being Chinese, or as being from areas with high infection rates.[

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