NH experiences the fifth case of a mosquito-borne Jamestown Canyon virus this 12 months


NEWPORT, NH – An adult in Newport, New Hampshire tested positive for Jamestown Canyon virus, the fifth case of the mosquito-borne disease this year, according to New Hampshire Health officials.

The person was hospitalized with left side weakness, unresponsiveness and multiple seizures, officials said Friday.

The virus is transmitted through the bite of an infected mosquito. There are no vaccines for it and treatment consists of supportive care.

Many of the diseases it causes are mild, but moderate to severe, central nervous system disorders that require hospitalization, including fatal infections.

Early symptoms can include flu-like illnesses with symptoms such as fever, muscle pain, headache, and fatigue.

“Although JCV is still a rare disease, we are seeing more infections in NH, which is worrying,” said Dr. Benjamin Chan, a state epidemiologist, in a statement. “The risk of mosquito-borne infections is from the time the snow melts in the spring until a mosquito frost occurs in the fall.”

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