Health officials confirmed the first cases of Zika virus in Ohio and Indiana Tuesday.
A 30-year-old woman in Cleveland contracted the virus, according to the Ohio Department of Health. Officials have not said whether she was pregnant.
Late Tuesday, the Centers for Disease Control and Prevention notified ODH of a second Ohio case of Zika virus, a 21-year-old Stark County man. The two cases are not linked.
“Given the number of travelers between Ohio and Zika virus-affected countries, it would not be a surprise to see more cases,” said ODH Medical Director Dr. Mary DiOrio.
The Indiana patient is a non-pregnant person. The state's Department of Health said the patient is not sick enough to require hospitalization.
All three had recently traveled to Haiti, according to health officials
There's no vaccine for the virus, which primarily spreads through bites from a mosquito.
There are at least 32 known cases in the continental U.S. None of those cases were transmitted through mosquito bites received anywhere in the continental U.S., health officials say.
Not much is known about the connection between the disease and infected mothers having babies born with abnormally small heads and potential brain damage.
The CDC has reported isolated cases of Zika virus spread through unprotected sexual contact with an infected person. There is no indication that it can spread from person to person through casual contact.
Health officials say severe Zika illness requiring hospitalization is uncommon.
Many people infected with Zika do not show symptoms. When symptoms occur, they are often mild and include fever, rash, joint and muscle pain, red eyes and headache.
In Ohio, health officials are planning exercises to ensure that state is prepared ahead of the 2016 mosquito season, which runs from May to October.
“The risk of contracting Zika virus here in Indiana remains low, but we know that many residents are concerned,” said Indiana Health Commissioner Jerome Adams. “We urge anyone visiting affected areas to take steps to avoid mosquito bites.”
“There is no vaccine available for Zika virus so it’s important for Ohioans traveling to affected areas to take steps to prevent mosquito bites,” said Dr. Mary DiOrio, ODH medical director.
The CDC has advised pregnant women to avoid traveling to areas where Zika virus has been detected.
To prevent potential transmission through sexual contact, CDC recommends men with a pregnant sex partner abstain from sexual activity or consistently and correctly use condoms during sex for the duration of the pregnancy.