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The graph shows the number of reported cases of measles in England and Wales between 1940 and 2010 - OCR Gateway - GCSE Biology - Question 7 - 2020 - Paper 2
Question 7
The graph shows the number of reported cases of measles in England and Wales between 1940 and 2010. Number of reported cases of measles In which year was the measl... show full transcript
Worked Solution & Example Answer:The graph shows the number of reported cases of measles in England and Wales between 1940 and 2010 - OCR Gateway - GCSE Biology - Question 7 - 2020 - Paper 2
Step 1
In which year was the measles vaccine likely to have been introduced?
Answer
To determine the likely introduction year of the measles vaccine, observe the trend in the graph. The number of reported cases shows a significant decline after 1968. This suggests that the vaccine was likely introduced around that time. Therefore, the most appropriate answer is:
C 1968