LOS ANGELES (AP) - Los Angeles County health officials are investigating a possible cluster of syphilis cases among adult film industry performers.

The Los Angeles Times reports (http://lat.ms/PB14XI ) the county Public Health Department has received reports of at least five possible cases in the last week.

Peter Kerndt, director of the county's Sexually Transmitted Disease programs, tells the newspaper officials will make sure the infected individuals are properly treated and try to determine who else may have been affected.

Public health workers are also attempting to find out the original source of the recent cluster.

Kerndt says there was an increase in syphilis cases throughout LA County between 2010 and 2011.

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