The Centers for Disease Control and Prevention has laid off thousands of workers since January. Current and former CDC staff members are grappling with uncertainty about both their futures and public health.

Staff and observers worry that the agency may not be prepared for emerging threats including bird flu and insect-borne diseases.

Four weeks after a puzzling outbreak was reported in the Democratic Republic of Congo, the World Health Organization has identified the cause.

Monkeypox is the latest case of how global health inequities persist. Vaccines went to the rich world while Africa lacks access. African scientists call for a bold plan to protect against pathogens.