An Italian tested positive for the Zika virus after returning from a trip abroad, the local health authority in the northern town of Reggio Emilia said on Friday.
"The condition of the patient is good and gives no cause for concern," the local health authority stated.
Regional hygiene services were already disinfesting within a 100 metre radius all areas where the patient had been to kill Tiger mosquitoes and prevent the Zika virus spreading locally, the health authority said.
The Zika infection has been linked to severe birth defects in almost 30 countries. The defects include microcephaly, where babies are born with abnormally small heads and restricted brain development, and neurological complications.
Although the virus is mostly spread by mosquitoes, it can also be sexually transmitted, according to the United Nations World Health Organisation.
WHO said in November last year that Zika was no longer an international emergency but David Heymann, the head of a WHO emergency committee on the virus, said it still posed a "significant and enduring" threat.
Few people die from Zika and only one in five people infected is thought to develop symptoms. These can include fever, a rash and joint pain.