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schema:articleBody	A surge in hospital visits and internet searches related to COVID-19 symptoms from the Chinese city of Wuhan suggests the coronavirus may have been circulating since August 2019, according to a preliminary study by researchers at Boston University and Harvard. The pandemic, which has been linked to a virus that crossed over from animals to humans, was initially identified in Wuhan's Huanan Seafood Market in December 2019. Later, experts estimated a genetic ancestor to the virus emerged around mid-November 2019. A report in the South China Morning Post citing government data suggested a "patient zero" could be traced back to November 17. The new paper, which has not yet appeared in a peer reviewed journal, comes under the relatively new field of "digital epidemiology." A team led by Elaine Nsoesie at Boston University analyzed 111 satellite images from Wuhan between January 2018 to April 2020, as well as frequently looked up symptoms on the Chinese search engine Baidu. "A steep increase in volume starting in August 2019" was detected at Wuhan hospital parking lots, "culminating with a peak in December 2019," the authors wrote. Because queries for the word "cough" rise along with yearly influenza seasons, they also looked for "diarrhea" which is a more COVID-19 specific symptom. "In August, we identify a unique increase in searches for diarrhea which was neither seen in previous flu seasons or mirrored in the cough search data," the team said. While respiratory symptoms are the most common hallmarks of SARS-CoV-2 infection, the study suggested that diarrhea "may play an important role in community transmission." The authors concluded that while they could not definitively confirm that the data they documented was linked to the virus, it supported conclusions reached by other research. "These findings also corroborate the hypothesis that the virus emerged naturally in southern China and was potentially already circulating at the time of the Wuhan cluster," they said. ia/bfm
schema:headline	New coronavirus may have emerged in summer 2019: study
schema:mentions	Elaine Benes Epidemiology Digital media Huanan Seafood Wholesale Market Web search engine Boston University Gastroenteritis Severe acute respiratory syndrome-related coronavirus Cough Satellite Ia (cuneiform) Harvard University Influenza Wuhan City Pandemic Virus China Severe acute respiratory syndrome coronavirus 2 South China Morning Post Baidu Radio in New Zealand
schema:author	http://data.cimple.eu/organization/1f0054d541e000623a2c1e561a247c073ef6328e8be9ffafda7b3fcd
schema:datePublished	2020-06-09 (xsd:date)
http://data.cimple...sPoliticalLeaning	other political leaning
http://data.cimple...logy#hasSentiment	neutral sentiment
http://data.cimple...readability_score	86 (xsd:integer)
http://data.cimple...tology#hasEmotion	happiness

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