Trends in malaria in Australia, 1991-1997.

An analysis of the malaria cases in the current NNDSS dataset was undertaken for cases with onset dates in 1991 to 1997. To allow for reporting delays, the analysis for each year included cases with onset dates in that year which were reported up to and including 30 June in each subsequent calendar year. Data were downloaded from EpiInfo version 6 and analysed using SPSS for Windows version 8.0 Time series data for the period 19171991 were downloaded from the NNDSS historic data collection in Microsoft Excel.