[Socio-political aspects of toxoplasmosis epidemic in Santa Isabel do Ivaí, Paraná State, Brazil].

In 2002, due to a toxoplasmosis epidemic Santa Isabel do Ivaí, Paraná State, was the focus of sanitary investigations. Four hundred and twenty six individuals had serology suggestive of acute T. gondii infection (IgM reactor), considered the largest outbreak of toxoplasmosis ever reported in the world. This research was meant to identify actions carried out by the sanitation and health services sector at that time, highlighting the political conflicts that took place during the process and identifying the measures taken by the sanitary authorities during and after the epidemic period. This is an interdisciplinary study aimed at understanding major problems of public health like this one. The investigation was based on the contents of documents--press and institutional--and interviews. According to official data, the epidemic was caused by the contamination of one of the water reservoirs that supply the city. This research showed that political and social factors, as the party instability and the level of political dependence of local society, were largely responsible for the occurrence of the epidemic and for the difficulties faced by the health agents during such crisis.