WHO and its many partners regularly deploy mobile clinics and medical teams to reach people cut off from access to health services. For many people, these mobile clinics and teams may be their only source of health care. Mobile clinics offer flexible and viable options for treating isolated and vulnerable groups as well as to newly displaced populations. When coordinating crisis response, WHO arranges for mobile health care teams to go by foot, bike, moto, boat or vehicle. The demand for mobile units keeps rising. WHO may buy mobile clinics or supply them, or pay for partners to buy or supply them.