WUHAN, China — The 3-year-old boy was anxiously waiting for yet another round of chemotherapy. Then the new coronavirus outbreak hit, and doctors suddenly turned him away.

The boy, Fu Haoran, who has leukemia, is one of many seriously ill people struggling to get urgent, lifesaving treatment as China pours nearly all its resources into the coronavirus epidemic. Some have not survived. Others like Haoran are in limbo, and their families fear for their future.

In Wuhan, many hospitals have been converted into facilities for treating only patients with the coronavirus. Elsewhere, other facilities have closed amid shortages of medical workers or rejected patients because of fears of cross-infection in the wards. Elective surgeries have been postponed indefinitely. Many cities have imposed travel restrictions and quarantine requirements that, for many critically ill patients, mean delays they cannot afford.

[Read: China pushes back as the coronavirus crisis damages its image.]

“The country is in a state of crisis — this we understand,” said the boy’s father, Fu Hetian, in Wuhan, the city at the center of the outbreak. “But when will it end?”