A Massapequa High School student who the district said was diagnosed with MRSA does not have the staph infection, the Nassau County health department said Friday.

A laboratory report showed that the student does not have a drug-resistant infection so it's "not something we'd investigate," said health department spokeswoman Mary Ellen Laurain.

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The Massapequa school district posted a notice on its website that said the student received notification at the close of school on Wednesday that the student had been diagnosed with MRSA, or methicillin-resistant Staphylococcus aureus.

A phone call Friday to Superintendent Lucille F. Iconis seeking more information was not immediately returned.

Laurain said the district made the department aware of the case, and on Friday the department informed the district the student does not have MRSA. She declined further comment on the student.

MRSA, a community-based infection, begins on the skin and can be dangerous and potentially deadly if it enters the blood stream, according to health experts.

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While 25 to 30 percent of the population carries staph, only 1 percent carries MRSA, according to the site.