Ministries of Health and Agrarian Concerns working

the "Zoonosis Commission", a working group of professionals of both institutions, for improving the epidemiological surveillance and control of trichinellosis in Buenos Aires Province. The main purpose was the early detection and control of swine trichinellosis, for reducing human outbreaks, the strategy of action was to decentralize epidemiological surveillance and control activities at municipal level, integrating 101 counties of the endemic area. Since 1996 a high number of infected pigs were detected previously to human consumption (years 1996-1999: 1,073 infected pigs), and since 1997 the occurrence of human outbreaks and swine foci have decreased. K E Y W O R D S: trichinellosis, surveillance, control. increased during the last decade until 1997, overcoming the mean of 100 human cases per year and, at the same time, the occurrence of swine trichinellosis foci has increased (Bolpe & Caminoa, 1998). In the present paper, w e describe the evolution of tri-chinellosis in Buenos Aires Province and the epide-miological surveillance and control activities made b