PMC:7229913 / 1333-4315 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7229913","sourcedb":"PMC","sourceid":"7229913","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7229913","text":"1 Introduction\nRecently, the coronavirus disease 2019 (COVID-19) outbreak has quickly spread globally and has shown significant impact on public health and economy (Chinazzi et al., 2020; Li et al., 2020; Rothe et al., 2020; Yan et al., 2020). Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative factor for the COVID-19 pandemic, can infect humans via several routes, such as inhalation of respiratory droplets or aerosols and contact with contaminated surfaces. Previous studies have indicated that SARS-CoV-2 can be detected in indoor as well as outdoor air. Preliminary evidence clearly proved that the virus could cluster with outdoor particulate matter (PM) under certain circumstances (Jiang et al., 2020; Setti et al., 2020). Particularly, it is suggested that SARS-CoV-2 may have the potential to spread through aerosols, which can be produced by speaking at a normal volume (Anfinrud et al., 2020). In addition, it is found that SARS-CoV-2 can stay for a considerably long time in the air. The aerodynamic characteristics and propagation of SARS-CoV-2 in aerosols have been reported (Liu et al., 2020). It was reported that SARS-CoV-2 was still found in the Diamond Princess cruise ship 17 days after people disembarked.\nTherefore, it is essential to understand the survival of SARS-CoV-2 in the ambient environment to prevent COVID-19. This information is very useful not only for the policymakers but also for the general population. Many previous investigations have shown that the viability of viruses is strongly dependent on temperature (Tang, 2009; Huang et al., 2018). Transmission of influenza can be reduced under high temperature conditions (Lowen et al., 2008). It has been proven that high temperatures can effectively deactivate viruses, resulting in a large reduction in the amount of active viruses (Park et al., 2020). Recent studies have shown that the rate of confirmed COVID-19 cases is closely related to temperature (Triplett, 2020; Luo et al., 2020; Xie and Zhu, 2020). It is of great importance to determine the preferred temperature range of SARS-CoV-2 in order to help us prevent the COVID-19 outbreak. Particularly, hospitals and densely populated areas can be informed about optimal temperature ranges to reduce the probability of cross-infection. However, such knowledge is not currently available for SARS-CoV-2, which is a novel virus. Therefore, it cannot be utilized yet to prevent the spread of the COVID-19 pandemic.\nTo address these knowledge gaps, we investigated the impact of ambient temperature on global dispersal of COVID-19. The relationship between daily confirmed cases of COVID-19 and meteorological conditions (temperature and humidity) was studied using the data of approximately 3,750,000 global confirmed COVID-19 cases. Section 2 briefly introduces the data and the methods used in this paper. The results and the discussion are presented in Section 3 and the conclusion is presented in Section 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