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.
➢ 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.