Molecular investigation of Toxoplasma gondii in oysters (Crassostrea spp.) sold on beaches in the State of Pará, Brazil.

The aim of this study was to detect Toxoplasma gondii DNA in oysters (Crassostrea spp.) sold on seven beaches in the State of Pará, Brazil. According to the National Program for Hygiene and Sanitary Control of Bivalve Mollusks, 100 g of the edible part of mollusks is required to analyze contaminating microorganisms.

Detection of Toxoplasma gondii in Crassostrea spp. oysters cultured in an estuarine region in eastern Amazon.

The aim of the present study was to detect DNA of Toxoplasma gondii in Crassostrea spp. oysters cultured in the state of Pará, Brazil. A total of 400 oysters were directly collected from a fixed rack system.

Detection of antibodies against Leptospira spp in free-living marsupials caught in the Eastern Amazon.

Introduction: Serological surveys are important to assess the health status of wild animals. In this study, antibodies against Leptospira spp, causal agents of leptospirosis, were detected in free-living marsupials in the State of Pará, Brazil.

Methods: Nineteen blood samples collected from marsupials in the municipalities of Peixe-Boi, Viseu, and Castanhal were subjected to microscopic agglutination tests.