Which US state has the highest annual case reports of leptospirosis?

Updated: Jul 08, 2021
  • Author: Sandra G Gompf, MD, FACP, FIDSA; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Because reliable diagnostic testing was not readily available and organized reporting had not resulted in implementation of methods to control the disease, many states stopped reporting leptospirosis. Nevertheless, numerous states, including Hawaii, continued to report. In 2013, leptospirosis was reinstated as a nationally notifiable disease.

In Hawaii, which reports the highest annual occurrence rate, 405 suspected cases of leptospirosis were reported between June 1998 and February 1999; 61 of those cases were confirmed. [24] Case numbers widely varied from island to island within the state. Incidence rates ranged from 2.3-40.2 cases per 100,000 persons, with the highest numbers of cases on Kauai and Hawaii.


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