A bus run by the organization Prevention Point parks at Kensington and Allegheny avenues in Philadelphia to offer harm-reduction services to drug users in the area. Louis Morano (center), who was visiting the Prevention Point bus for the second time, sits outside and waits to be seen by Dr. Ben Cocchiaro.

A bus run by the organization Prevention Point parks at Kensington and Allegheny avenues in Philadelphia to offer harm-reduction services to drug users in the area. Louis Morano (center), who was visiting the Prevention Point bus for the second time, sits outside and waits to be seen by Dr. Ben Cocchiaro