Differences in climatic factors between Ross River virus disease outbreak and nonoutbreak years.
Ross River virus is a common mosquito-borne arbovirus responsible for outbreaks of polyarthritic disease throughout Australia. To better understand climatic factors preceding outbreaks, we compared seasonal and monthly rainfall and temperature trends in outbreak and nonoutbreak years at four epidemic-prone locations. Our analyses showed that rainfall in outbreak years tended to be above average and higher than rainfall in nonoutbreak years. Overall temperatures were warmer during outbreak years. However, there were a number of distinct deviations in temperature, which seem to play a role in either promoting or inhibiting outbreaks. These preliminary findings show that climatic differences occur between outbreak and nonoutbreak years; however, seasonal and monthly trends differed across geo-climatic regions of the country. More detailed research is imperative if we are to optimize the surveillance and control of epidemic polyarthritic disease in Australia.
Kelly-Hope
Louise A
LA
Infectious Diseases and Immunology Division, Queensland Institute of Medical Research and The University of Queensland, School of Population Health, Herston Qld 4029, Australia.
Purdie
David M
DM
Kay
Brian H
BH
D018354:Alphavirus Infections / Q000453:epidemiology*; D001315:Australia / Q000453:epidemiology; D002980:Climate; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D006801:Humans; D011891:Rain; D012398:Ross River virus; D012621:Seasons; D013997:Time Factors; D014887:Weather