infection in domestic and synanthropic mammals such as potential risk of sylvatic transmission in a rural area from north of Antioquia, Colombia.

In Colombia, dogs and opossum are the most important mammals in domestic and sylvatic transmission. However, the role of both species has not been evaluated in areas where both species converge in the peridomestic area. To evaluate the infection status of domestic and wild mammals in peridomestic habitats of Puerto Valdivia, Antioquia Department. The infection of domestic dogs and small wild mammals was performed by hemoculture, molecular and serological methods. Additionally, the infection in children under 15 years old and triatomine searches was carried out. We found that 16.07% and 34% dogs, and 59.1% and 61.1% were found positive by molecular and serological methods respectively. Moreover, in 25% and 75% of the infected dogs were detected TcI and TcI sylvatic, respectively, while all the were infected with TcI. Six and three were captured but without infection. Finally, none of the 82 children were positive and no triatomine bugs were captured. and domestics dogs have an important role in the transmission of suggesting a potential risk in transitions areas.