The graphics present information about an experimental flu vaccine trial conducted on females in a large town in June 1996, along with data on flu deaths and infection rates for both genders.
Overall, females consistently recorded higher flu rates and deaths than males. June to August was the most dangerous period, and the groups most at risk among vaccinated females were the elderly and those not given the vaccine.
The bar chart shows deaths from flu in two periods. Between March and May, deaths were low, at about 1 male and 1 female. However, from June to August the figures rose sharply, especially for females. Female deaths reached approximately 4, double the male figure of around 2.
The pie chart illustrates the distribution of female groups most at risk. The largest proportion was women aged over 65 (35%), followed by those not given the vaccine (28%). Babies or children accounted for 24%, while hospitalised females made up the smallest share at 13%.
Finally, the line graph indicates flu cases during 1996. Rates for both genders climbed rapidly from February and peaked in June, at roughly 3,500 cases for females and 2,700 for males. After August, infections gradually declined, although female rates remained higher than male rates throughout the year