Over the last week over 150 cases of conjunctivitis were reported in the city of Goioerê (located in Parana State), with 52 of those cases occurring over the weekend. At about 29,000 inhabitants the city of Goioerê is considered relatively small and any outbreak of this magnitude is cause for city officials to be alarmed, and in addition the highly contagious nature of conjunctivitis, the ministry of health is concerned about containing this outbreak. All inhabitants of Goioerê are encouraged to wash their hands frequently, and not to stay in enclosed (non-ventilated) housing with large gatherings of people.