In June 1996, an experimental flu vaccine was trialled in a large country town on females only. The result of this survey is presented in the following illustration.

The given diagram illustrates the outcome of a trial conducted on an experimental influenza immunisation on women in a large rural area in June 1996.

At a glance, it is evident that the age of the participants and the side effects they experienced varied significantly. It can also be observed that the percentage of women who experienced no side effects was the highest in all age groups.

In terms of the specific age groups, the majority of the participants were aged between 36 and 45, with this group also having the highest percentage of women with no side effects, at around 75%. In contrast, the 46-55 age group had the highest percentage of women who experienced minor side effects, at just over 30%, followed by the 26-35 age group, at just under 30%.

Interestingly, the 56-65 age group had the smallest number of participants, but they experienced the most severe side effects, with nearly 10% of them requiring hospitalisation. Meanwhile, the 26-35 age group had the second highest number of participants, but they had the lowest percentage of hospitalisations, at approximately 2%.