(SANFRANCISCO.CBSLOCAL) — A deadly mosquito that hasn’t been seen in the Bay Area since the 70s has been detected in San Mateo County.

It’s called aedes aegypti and it was found last January in the Holy Cross cemetary in Menlo Park.

It’s the mosquito that spreads yellow fever, chicken fever, the dengue fever and other diseases. Officials call it “one of the worst most effective vectors of disease around the world.”

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