More than 40 Americans are among several hundred people who have tested positive for the coronavirus while quarantined on a cruise ship in Japan, health officials said Sunday.

A total of 355 people aboard the Diamond Princess are infected with the virus, according to Japanese health minister Katsunobu Kato.

Forty-four of those infected passengers are Americans, Dr. Anthony Fauci, director of the U.S. National Institute of Allergy and Infectious Diseases, told The Washington Post .