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Doctors Warn Zika Could Spread in Sweat and Tears

Investigators spent weeks trying to figure out how his a man could have contracted Zika from his dying father

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    In this July 19, 2016, photo, Nadja Mayerle with the Salt Lake City Mosquito Abatement District looks at a mosquito. Health authorities in Utah were investigating a unique case of Zika found in a person who had been caring for a relative who had an unusually high level of the virus in his blood. A team of doctors argue in a medical paper that it must have been transmitted by the relative's sweat and/or tears.

    Doctors who treated a strange case of Zika say sweat and tears may be able to transmit the virus, NBC News reports.

    A team at the University of Utah School of Medicine said their case, of a man who infected his adult son with Zika before he died, leaves no other alternatives than those two routes, according to their study in the New England Journal of Medicine.

    The 73-year-old patient died in July, and he hadn't been very sick before he caught the virus and developed muscle aches, diarrhea and other symptoms. He became the first person in an American state to die of Zika.

    Investigators spent weeks trying to figure out how his 38-year-old son, who hadn't traveled to a place where Zika spreads, got infected, eventually determining that "infectious levels of virus may have been present in sweat or tears," which the son touched without gloves during his father's illness.