Health officials in Massachusetts have announced the first human case of West Nile virus this summer.
The Department of Public Health says the patient, a Middlesex County woman in her 70s, was diagnosed with West Nile virus through testing that was completed on Tuesday.
She remains hospitalized.
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Officials say they're still determining where the patient was most likely exposed to the mosquito-borne illness.
There were 10 human cases of West Nile virus infection in Massachusetts last year.