Which letter indicates the endemic level?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Which letter indicates the endemic level? I tried "d" and "b," but both are wrong. Please help!

The graph illustrates the incidence of influenza throughout a typical year in the Northern Hemisphere. The months from July to May are displayed on the horizontal axis. 

Key points on the graph are labeled with letters:

- **a.** represents the peak incidence of influenza, which typically occurs around December to January.
- **b.** indicates the sharp rise in influenza cases starting around October.
- **c.** signifies the gradual decline in influenza cases between January and March.
- **d.** shows the endemic level, where the incidence is low and stable, typically seen from July to September and April to May.

Question: Which letter on the graph indicates the endemic level?
Answer: **d.**
Transcribed Image Text:The graph illustrates the incidence of influenza throughout a typical year in the Northern Hemisphere. The months from July to May are displayed on the horizontal axis. Key points on the graph are labeled with letters: - **a.** represents the peak incidence of influenza, which typically occurs around December to January. - **b.** indicates the sharp rise in influenza cases starting around October. - **c.** signifies the gradual decline in influenza cases between January and March. - **d.** shows the endemic level, where the incidence is low and stable, typically seen from July to September and April to May. Question: Which letter on the graph indicates the endemic level? Answer: **d.**
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