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" ... The discussion in the journal article also provides an important consideration of this technology: “Prior clinical studies showed COVID-19 pneumonia produces characteristic features on chest imaging, but up to 56% of symptomatic patients can demonstrate normal chest imaging, especially early in their disease course. Imaging is therefore inappropriate to “rule out” disease. Also, many of the findings seen in COVID-19 imaging are non-specific with overlap, particularly with other viral pneumonias. Chest imaging therefore should not be used as a diagnostic tool for COVID-19, but could play an important role in earlier identification of patients likely to have the disease to aid in triage and infection control.” ... "
" ... We know that China notified WHO regional office in China on December 31 that there were 27 cases of severe pneumonia in Wuhan. We now know that Wuhan and China suppressed information on the outbreak during December. On January 3, WHO posted on twitter that there was a cluster of pneumonias reported in Wuhan and that they were investigating its nature and on January 5 publicly reported there were 41 cases. On January 13, WHO confirmed the first case outside of China, in Thailand. After WHO staff in China visited Wuhan, WHO reported the possibility of human-to-human transmission on January 22 and convened its Emergency Committee (EC) under the International Health Regulations. It failed to reach a consensus on the seriousness of the outbreak. ... "