STOCKHOLM (AP) — Health authorities in Norway say two pregnant women have tested positive for the zika virus after traveling in Latin America.

The Norwegian Institute of Public Health on has recently tested dozens of people for the virus, mostly pregnant women.

Jon Arne Roettingen told reporters Thursday that so far three tests came back positive. He said two of them were pregnant women and one was a man. All had visited areas affected by the virus in Latin America.

Roettingen could not say whether the virus had affected the pregnancies of the infected women in any way but said they were being closely monitored by health care personnel.

Health officials are investigating whether the mosquito-borne virus is linked to birth defects in the children of women who caught the virus while pregnant.