The woman had been infected with the mosquito-born virus last week. U.S. Department of Agriculture / Flickr

The woman who contracted West Nile Virus in Middlesex County has been "safely discharged" home, Public Health Commissioner Monica Bharel told the News Service on Tuesday.

After testing, public health officials announced last Tuesday the woman had been infected with the mosquito-borne virus.

As the Zika virus expands northward in Florida, the Bay State has not seen populations of the mosquitoes that carry that virus, Bharel said.

Zika's spread through Latin America and the devastating effects it has on unborn children, such as microcephaly, has galvanized attention around the world.


On Tuesday Florida officials reported the first locally transmitted case of the mosquito-borne Zika virus outside of Miami-Dade County, in Pinellas County.

According to the Centers for Disease Control and Prevention the virus is spread by the Aedes species mosquito, described as "aggressive daytime biters," which can also bite at night.

"We have no local mosquito-borne cases of Zika in Massachusetts. The mosquito species that carries Zika do not breed in Massachusetts," said Bharel, who said the state looks for those mosquito species and keeps in touch with federal partners.

Scott Zoback, director of strategic initiatives at the Department of Public Health, said officials had expected a higher count of West Nile by this time.