Fig. 3. Epidemic spread of adenovirus conjunctivitis among children and staff of a summer day camp, their household contacts, and nearby residential neighborhoods; Washington, DC, 1954. (Reproduced by permission of the American Medical Association, copyright 1955. Bell JA, Row WP, Engler JI, et al: Pharyngo-conjunctival fever. Epidemiological studies of a recently recognized disease entity. JAMA 157:1083, 1955)