Pedestrians wearing face masks are seen on the street in Milan, Italy, March 2, 2020. A total of 1,835 people have tested positive for the novel coronavirus so far in Italy, up by 258 cases compared to an official tally released on Sunday evening, the Civil Protection Department said Monday. (Photo by Daniele Mascolo/Xinhua)

A woman wearing a face mask is seen in the subway in Milan, Italy, March 2, 2020. A total of 1,835 people have tested positive for the novel coronavirus so far in Italy, up by 258 cases compared to an official tally released on Sunday evening, the Civil Protection Department said Monday. (Photo by Daniele Mascolo/Xinhua)

People wearing face masks walk past the Pantheon in Rome, Italy, March 2, 2020. A total of 1,835 people have tested positive for the novel coronavirus so far in Italy, up by 258 cases compared to an official tally released on Sunday evening, the Civil Protection Department said Monday. (Photo by Alberto Lingria/Xinhua)

People wearing face masks walk past the Bocca della Verita in Rome, Italy, March 2, 2020. A total of 1,835 people have tested positive for the novel coronavirus so far in Italy, up by 258 cases compared to an official tally released on Sunday evening, the Civil Protection Department said Monday. (Photo by Alberto Lingria/Xinhua)

A man wearing a face mask takes photos on the street in Milan, Italy, March 2, 2020. A total of 1,835 people have tested positive for the novel coronavirus so far in Italy, up by 258 cases compared to an official tally released on Sunday evening, the Civil Protection Department said Monday. (Photo by Daniele Mascolo/Xinhua)

Pedestrians wearing face masks walk on the street in Milan, Italy, March 2, 2020. A total of 1,835 people have tested positive for the novel coronavirus so far in Italy, up by 258 cases compared to an official tally released on Sunday evening, the Civil Protection Department said Monday. (Photo by Daniele Mascolo/Xinhua)