During what time of the year do most cat scratch disease (CSD) cases occur in the US?

Updated: Feb 16, 2021
  • Author: Robert A Schwartz, MD, MPH; Chief Editor: Michael Stuart Bronze, MD  more...
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Approximately 70-90% of CSD cases occur in the fall and early winter months. This seasonality is presumed to be due to a midsummer rise in kitten births accompanied by increased flea infestation.

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