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Retrospective quantitative analysis of epidemiological data on peste des petits ruminants (PPR) from the Department of Animal Husbandry and Veterinary Sciences in Karnataka, southern India, revealed significant information about the disease in this area. In the nine years between April 1998 and March 2007 a total of 624 outbreaks were reported in the state. With the exception of the 12-month period between April 2001 and March 2002 the disease occurred every year. The study shows clearly that incidences were highest during the rainy season and in the dry agro-climatic zones. The density of the PPR-susceptible population in different districts of the state played a major role in disease incidences. Environmental factors also influenced disease occurrence. Vaccination programmes are slowly being taken up in the state. The disease data documented in this study provide information about the endemicity of the disease that can help to formulate an effective strategy for a PPR-control programme in the state.