MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Surgeon washing her hands. Hospital surgeon cleaning her hands with running tap water. High standards of hygiene are needed in hospitals to reduce the chances of hospital-acquired infections. One common source of infection is by hand-to-patient contact. Photographed at St Mary's Hospital, Lacor, Gulu, Uganda.
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