➢ In the year 1996, data was collected for the incidence of flu in a large country town, which is presented in the following illustration. Summarize the information by selecting and reporting the main features and make comparisons where relevant.
The graph shows the impact of vaccinations on the incidence of whooping cough, a child illness, between 1940 and 1990 in Britain.
The graph shows the impact of vaccinations on the incidence of whooping cough, a childhood illness, between 1940 and 1990 in Britain. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.