A marked seasonality to a disease is often indicative of

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A marked seasonality to a disease is often indicative of certain modes of transmission. For example, if a disease is more prevalent during the summer months, it may be spread through mosquito bites or other outdoor activities that are more common during this season. Similarly, if a disease is more common in the winter, it may be spread through respiratory transmission or in close quarters, as people are more likely to be indoors and in closer contact with one another during this time. A marked seasonality does not necessarily indicate a seasonal reservoir or the presence of carriers, although these factors could certainly contribute to the spread of the disease. A zoonotic infection may or may not be affected by seasonal factors, depending on the mode of transmission and the behavior of the animal reservoir.

A Marked Seasonality to a Disease Is Often Indicative of