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Cyclic Variations in the Occurrence of Pneumonia and Influenza Mortality

Question 9

Multiple Choice

Cyclic variations in the occurrence of pneumonia and influenza mortality may reflect:


A) seasonal variations in cases of influenza.
B) the fact that influenza is a disappearing disorder.
C) long-term changes in mortality trends.
D) seasonal variations in cases of influenza and the fact that influenza is a disappearing disorder.

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