the graph shows the impact of vaccinations on the incidence of whooping cough,a childhood illness, between 1940 and 1990 in Britain.

The graph illustrates the influence of

vaccine

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uptakes on the frequency of

cases

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of childhood disease named whooping cough, from 1940 to 10990, in the UK.

It is clear that

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throughout the first 15 years, the number of

cases

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was extremely high.

However

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, when the vaccination began, it dropped significantly, with its absence by the end of the

period

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, when almost all children were vaccinated. Focusing first on the

period

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without the

vaccine

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, in 1940, 60,000

cases

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of the disease were reported and

this

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figure

skyrosketed

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skyrocketed

by 1943, with more than 170,000 ill children.

However

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,

this

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proportion dropped to its initial

level

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by 1945,

whereas

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by 1950, it rose sharply to the highest

level

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reported before. With respect to the

period

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when vaccination was used, by 1955, the incidence of illness decreased to approximately 90,000

cases

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, with its following fall to the

level

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of 0 to 20,000

cases

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by 1975, when almost 82% of the young population received the

vaccine

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. After that, the percentage of vaccinated children was reduced to 30%, so the number of

cases

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rose to roughly 60,000.

Hovewer

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However

, starting from 1990, when the

vaccine

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uptake was at the

level

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of 94%, the frequency of the diseases went down significantly to 0 incidents by the end of the

period

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.