Officials in a California city are urging residents sensitive to smoke to remain indoors while a huge warehouse fire burns for a third day. Monitors show that air quality is in the “unhealthy” range in Tracy, California. That is where the fire in the one-million-square-foot Medline warehouse has been burning since Thursday. Medline is a major provider of medical equipment including surgical equipment and latex gloves. Firefighters expect air quality to remain poor for the next few days while they fight the fire inside the building. Tracy is a city of 100,000 people about 55 miles east of San Francisco.

Healthcare workers in eastern Congo say they are underprotected and undertrained as a rare Ebola virus spreads rapidly in one of the world’s most remote and vulnerable places. The virus known as Bundibugyo had spread undetected for weeks and will take months to control. So far, 51 cases have been confirmed in Congo, with two in Uganda. The World Health Organization says the outbreak poses a low global risk but that local case numbers will increase. The arrival of any potential vaccine is months away. The region faces immense pressure from conflict and a collapsing health system, stretching limited resources even further.