Analysis on effect of air pressure and air temperature on outbreak and epidemic of SARS

  Objective   To analyze the relationship between incidence of SARS and air pressure and air temperature, to explore nature and environment factors that affect SARS outbreak.

  Methods   To adopt descriptive epidemiology, correlation and regression statistics to study the relation of correlation and multiple linear regression between incidence of SARS in Guangzhou and Hong Kong and local average air pressure and average air temperature.

  Results   Average air pressure is 5.5, 6.2 hectopascals respectively compared with breakout period and subsidizing period of SARS in Guangzhou, and Hong Kong.Average air temperature are under 4.3℃ and 6.0℃ respectively, incidence of SARS has positive correlation with average air pressure, negative correlation with average air temperature.Multiple linear regression indicates the sigificant difference between incidence of SARS and temperature and pressure.

  Conclusion   Outbreak and epidemic of SARS is affected by air pressure and air temperature.