During January-April 2015, a major outbreak of conjunctivitis on Réunion Island caused a large public health impact. On the basis of general practitioner consultations, emergency department visits, and eye medication sales during the 13-week epidemic, we estimated a total healthcare cost of €3,341,191 from the outbreak.
Keywords: Cire OI; France; French national health insurance; International Classification of Diseases; Madagascar; Mauritius; NHI; Oscour network; Réunion Island; SNIIR-AM; South-West Indian Ocean; Syndromic surveillance; conjunctivitis; outbreak.