PMC:7011107 / 740-2270 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7011107","sourcedb":"PMC","sourceid":"7011107","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7011107","text":"INTRODUCTION\nSeveral clusters of patients with pneumonia of unknown etiology in Wuhan, Hubei Province, China were reported to the Chinese health authorities starting on December 8, 2019, and most of these cases were epidemiologically linked to a local fish and animal market [1,2]. The pathogenic agent responsible for these clusters of pneumonia was identified as a 2019 novel coronavirus (2019-nCoV) [1]. At the very beginning of the 2019-nCoV outbreak in China, much remained unknown, except for the fact that it was transmitted by direct exposure at the market [3]. However, person-to-person transmission of 2019-nCoV has been confirmed [4], and asymptomatic individuals have been identified as potential sources of infection [5]. The number of identified cases has been steadily growing, and as of February 3, a total of 14,557 cases had been reported globally (14,411 in China and 146 in 22 other countries) [6]. Since the first laboratory-confirmed case was identified on January 20, 2020 in Korea, the number of reported cases grew to 15 as of February 3, 2020 (Figure 1 and Table 1) [7].\nThere remain considerable knowledge gaps on 2019-nCoV; therefore, the public health authorities in countries with any likelihood of experiencing imported cases of 2019-nCoV should update the case definition to reflect newly updated epidemiological data. Herein, we present a review of the literature on the epidemiological characteristics of human infections with 2019-nCoV to provide an interim summary to public health 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