The new cases represented the first infections in Italy acquired through secondary contagion and tripled the country's total to nine. The first to fall ill met with someone in early February who had returned from China on Jan. 21 without presenting any symptoms of the new virus, health authorities said.
Authorities think that person passed the virus onto the 38-year-old Italian, who went to a hospital in the town of Codogno with flu-like symptoms on Feb. 18 but was sent home. He returned to the hospital after his conditions worsened and is now in intensive care, Lombardy region public welfare director Giulio Gallera said.
The man's wife and a friend who did sports with him have also tested positive for the virus. The Italian Health Ministry ordered anyone who came into direct contact with the three to be quarantined for 14 days. About 150 people, including medical personnel, were in isolation undergoing tests.
Another three people in the Lombardy region also tested positive Friday, the health ministry said later.