The graph depicts the impact of vaccinations on the number of cases of whooping cough among children between 5 decades starting from 1940 to 1990.
Overall, before the advent of vaccination, the incidences of whooping cough were staggeringly high. In addition, the percentage of vaccine uptake also affected the cases of whooping cause in children.
Regarding the surveyed interval before the appearance of vaccine for whooping cough, starting at merely 60,000 reported cases, the number of people being infected with disease skyrocketed to the peak of approximately 170,000 cases in just two years. Despite some remarkable fluctuations in the number of reported cases, the quantity of infected people still remained at a disproportionately high level, which led to the final figure being about 90,000 thousand cases.
From 1956 onwards, the incidences of whooping cough commenced to plummet significantly and even reached a number just above zero a few times. Although the figures were volatile during the surveyed period, the number of reported cases stayed at a low level except for the number of infected children in the duration from 1975 to 1984 when the vaccine uptake for each individual was reduced. Since 1990 to 2010, the vaccine uptake was recovered and even elevated to merely 94%, which substantially reduced the reported number of people being infected with whooping cough and made the number of reported cases remained stable at the lowest number of almost zero cases.
