An estimated 50,000 people in the U.S. have been infected with the Zika virus and a new study warns of a spike in cases.
The Centers for Disease Control and Prevention said Tuesday it had found new cases of the virus in the last two weeks in Ohio.
The report was issued to Congress by the Ohio Department of Health.
The CDC said it was unable to say how many people had the virus or how many had recovered.
It said more than 2,000 new cases were reported between July and October.
The state has reported 2,859 cases, according to CDC figures.
In recent weeks, Ohio has been experiencing a spike.
John Kasich signed a bill in September allowing people to get vaccinated before travel.
The governor said that could lead to more cases.