Peer Reviewed
Abstract
Following the severe acute respiratory syndrome coronavirus (SARSāCoV) and Middle East respiratory syndrome coronavirus (MERSāCoV), another highly pathogenic coronavirus named SARSāCoVā2 (previously known as 2019ānCoV) emerged in December 2019 in Wuhan, China, and rapidly spreads around the world. This virus shares highly homological sequence with SARSāCoV, and causes acute, highly lethal pneumonia (COVIDā19) with clinical symptoms similar to those reported for SARSāCoV and MERSāCoV. The most characteristic symptom of COVIDā19 patients is respiratory distress, and most of the patients admitted to the intensive care could not breathe spontaneously. Additionally, some COVIDā19 patients also showed neurologic signs such as headache, nausea and vomiting. Increasing evidence shows that coronavriruses are not always confined to the respiratory tract and that they may also invade the central nervous system inducing neurological diseases. The infection of SARSāCoV has been reported in the brains from both patients and experimental animals, where the brainstem was heavily infected. Furthermore, some coronaviruses have been demonstrated able to spread via a synapseāconnected route to the medullary cardiorespiratory center from the mechanoā and chemoreceptors in the lung and lower respiratory airways. In light of the high similarity between SARSāCoV and SARSāCoV2, it is quite likely that the potential invasion of SARSāCoV2 is partially responsible for the acute respiratory failure of COVIDā19 patients. Awareness of this will have important guiding significance for the prevention and treatment of the SARSāCoVā2āinduced respiratory failure. (229 words)
Publication History
- 27 February 2020
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