KABUL, Afghanistan — After 30 years of medical work during some of Afghanistan’s bloodiest times, the International Committee of the Red Cross said on Monday that it was drastically reducing its presence in the country after a series of attacks on its staff.

The Red Cross said it would close its operations in Faryab and Kunduz, northern provinces heavily affected by fighting in recent years, scale down a regional hub in the northern city of Mazar-i-Sharif, and assess whether it could hand over an orthopedic center there to the Afghan government or another partner.

Heavy fighting has considerably limited access to health care across Afghanistan, with the southern province of Uruzgan already losing almost all its health facilities. The Red Cross decision is very likely to affect thousands of people, including many with disabilities. The organization’s seven rehabilitation centers around the country have provided more than 19,000 artificial legs and arms and other devices every year.

Six Red Cross staff members were killed in northern Afghanistan earlier this year, and last month a Spanish physiotherapist at the Mazar-i-Sharif orthopedic center, Lorena Enebral Pérez, was shot dead by one of her polio patients.