ABSTRACT
[This corrects the article DOI: 10.1007/s40201-020-00564-y.].
ABSTRACT
BACKGROUND: COVID-19 is a global pandemic. The purpose of this study is to explore correlations between the novel coronavirus (COVID-19) and meteorological indicators from cities across China. METHODS: We collected daily data of the cumulative number of infected, recovered and death cases, and the meteorological indicators including average temperature, wind speed, relative humidity, precipitation and air quality index (AQI) from 12 cities in China during the period of Jan 23 to Feb 22, 2020. Correlation tests were chosen for data analysis. RESULTS: The average temperature and AQI showed significant association with the mortality rate of COVID-19. The mortality rate was not correlated with wind speed, relative humidity or precipitation. Meanwhile, higher average temperatures and more precipitation were beneficial for the recovery rate of COVID-19, but the recovery rate was not correlated with wind speed, relative humidity or AQI. CONCLUSIONS: Our study provides a new basis for correlations between COVID-19, meteorological indicators and air quality index, which can help authorities to combat COVID-19.
ABSTRACT
BACKGROUND: The aim of this study was to estimate the number of blood donors during the COVID-19 incubation period across China. STUDY DESIGN AND METHODS: In this study, we developed a predictive model to estimate the number of blood donors during the COVID-19 incubation period among 34 provincial regions in China. Our main assumption was that blood donors of all ages in different regions have a stable blood donation intention and the same infection risk. RESULTS: First, we estimated the number of blood donors during the COVID-19 incubation period in Wuhan city, Hubei Province, and China, from December 31, 2019 to March 17, 2020. Second, we compared the number of blood donors during the COVID-19 incubation period in all provinces across China. In addition, we found that if all RBCs, plasma, and cryoprecipitation were stored in isolation until the 14th day, the potential risk of SARS-CoV-2 transmission through blood transfusion was reduced by at least 65.77% after the blood donor safely passed the COVID-19 incubation period. Moreover, if the detection of SARS-CoV-2 RNA was carried out on all platelets, the potential risk would be reduced by 77.48%. CONCLUSIONS: Although the risk is low, with the rapid spread of the COVID-19 and the appearance of alarmingly high infectivity and a high fatality rate, appropriate measures should be taken by health departments to ensure the safety of clinical blood.