HONG KONG — A 44-year-old man in the Philippines has died of the coronavirus, the first known fatality outside China, health officials said on Sunday, as the number of deaths jumped to more than 360 and other countries expanded travel restrictions in an effort to slow the spread of the outbreak.

The man, whose name was not released, was a resident of Wuhan, China, the center of the outbreak. He died on Saturday after developing what officials called “severe pneumonia.”

“This is the first known death of someone with 2019-nCoV outside of China,” the World Health Organization’s office in the Philippines said in a statement, using the technical shorthand for the coronavirus.

Philippine health officials said the man had arrived in the country on Jan. 21 with a 38-year-old woman. She remains under observation.