"We have tested some 40 people for the Zika virus itself for whatever reasons. To date, this diagnosis has been confirmed for two people, both have returned from the Dominican Republic. To date, we suspect two more people who have symptoms of the virus, but the final diagnosis has not yet been announced," Anna Popova told the Rossiya 24 television channel.
The Zika virus is transmitted by daytime-active mosquitoes. It does not cause serious complications in adults but is suspected of leading to severe brain defects and cases of microcephaly in newborns.
The current Zika outbreak originated in Brazil in the spring of 2015 before spreading across Latin America and gaining widespread media attention as confirmations of the first cases emerged in Europe and the United States earlier this year.