Abstract
The outbreak of coronavirus disease 2019 (COVID-19) in Dec 2019 sounded another alarm for humanbeing, with the first being the outbreak of severe acute respiratory syndrome (SARS) in 2003 Researchers found that the natural host of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the pathogen of COVID-19, may be the Rhinolophus sinicus There have been four outbreaks of coronaviruses (severe acute respiratory syndrome coronavirus [SARS-CoV], Middle East respiratory syndrome coronavirus [MERS-CoV], swine acute diarrhea syndrome coronavirus [SADS-CoV] and SARS-CoV-2) worldwide since the beginning of 21st century, and they have caused huge threats and losses to human health, public health, economic development, and social stability A large amount of evidence suggests that the natural host of all these four coronaviruses may be bats This article reviews the species and global geographic distribution of bat-related coronaviruses, and the above-metioned four coronaviruses causing severe outbreaks
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