The Delaware Division of Public Health recently announced a fifth Zika case in the state.

The Delaware Division of Public Health recently announced a fifth Zika case in the state.

The new case is a New Castle County adult male who traveled in May.

Like the four other cases, the person acquired the illness from a mosquito bite while traveling abroad. The first three cases announced in February and March were New Castle County residents — two women and a man.

None of the five Delaware residents are considered infectious if they are bitten by a mosquito that then bites another person. The virus leaves the blood after about a week and all current Delaware cases are two weeks to several months old. There have been no confirmed cases of transmission by a local mosquito bite anywhere in the continental U.S. Pregnancy is not a factor in any of the five Delaware cases.

While much less common, Zika can also be spread by men via vaginal, anal and oral sexual activity. DPH continues to recommend condom use for men who have been diagnosed with Zika virus or have symptoms for at least six months after symptoms first appeared.

For information, visit dhss.delaware.gov/dhss/dph/zika.html.