Monthly pneumonia and influenza deaths in the U.S., 1968 to 1978.
Monthly pneumonia and influenza deaths per 10,000 people in the United States for 11 years, 1968 to 1978.
data(flu)
The format is: Time-Series [1:132] from 1968 to 1979: 0.811 0.446 0.342 0.277 0.248 ...
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