Eunice Chan, a physician in Hong Kong, removes her face mask only to shower, eat and drink.

At dinner time, when her three daughters, ages 7, 9 and 12, gather around the dining table, she takes her meal in another room.

“There’s no more hugging, no more kissing,” she said. “This is especially difficult for my youngest daughter.”…

Dr. Pierre Chan, a gastroenterologist at a public hospital and a member of Hong Kong’s legislature, this month examined five patients infected with the coronavirus.

Though he was wearing full protective gear and his hospital did not require him to go into quarantine, he slept on the floor of his office for 14 days to avoid the possibility of infecting his daughters and his in-laws.