Penicillin drug treatment, World War II. Penicillin being administered from the equipment at left to a patient with an acute abscess of the right lobe of the liver in a case of severe secondary amoebiasis. This is an infection by the amoeba Entamoeba histolytica. Treatment includes drugs to kill the amoebae, but also antibiotics to treat bacterial infections and abscesses. Penicillin had been discovered in 1928, but was not widely used as an antibiotic until its mass production for the US Army in World War II. Photographed during World War II at the US Army's 142nd General Hospital. This hospital unit was stationed in Fiji and Calcutta, India, between 1943 and 1945.