Isolation of Salmonella enterica and serologic reactivity to Leptospira interrogans in opossums (Didelphis virginiana) from Yucatán, México.

The opossum Didelphis virginiana as a synanthropic reservoir of Trypanosoma cruzi in Dzidzilché, Yucatán, México.

In México, the role of mammals in the transmission cycle of Trypanosoma cruzi is poorly known. In the State of Yucatán, an endemic area of Chagas disease, both Didelphis virginiana and D. marsupialis occur sympatrically. However, until now, only the former species had been found infected with T. cruzi. To evaluate the role of D. virginiana in a peridomestic transmission, nine periods of capture...

Six new leptospiral serovars isolated from wild animals in Peru.

Six new serovars of Leptospira interrogans were isolated from opossums (Didelphis marsupialis and Philander opossum) trapped in the Peruvian jungle. The proposed names, type strain designation, and serogroup of the serovars, respectively, were: huallaga, strain M-7, Djasiman serogroup; luis, strain M-6, Tarassovi serogroup; machiguenga, strain MMD-3, Icterohaemorrhagiae serogroup; rioja, strain...

Serologic and bacteriologic diagnosis of bovine leptospirosis in Tehran suburb dairy farms

Leptospirosis is a worldwide zoonosis caused by Leptospira interrogans. This study was conducted toevaluate serologic and bacteriologic findings of leptospirosis in clinically-suspected cows. 380 sera and 33urine samples were collected from 6 industrial dairy farms in Tehran suburb, from December 2004 to June2005. The prevalence of disease was determined by microscopic agglutination test (MAT),...

Leptospirosis in small mammals of Iran; 1. Serologic tests and isolation of Leptospira hebdomadis from Apodemus sylvaticus

Prevalence of sarcocystis species sporocysts in wild-caught opossums (Didelphis virginiana).

Sarcocystis sporocysts were found in intestinal scrapings from 24 (54.5%) of 44 opossums (Didelphis virginiana). The number of sporocysts varied from a few (< 10,000) to 245 million. Sporocysts from 23 of 24 opossums were fed to captive budgerigars (Melopsittacus undulatas), and the inocula from 21 opossums were infective, indicating the presence of Sarcocystis falcatula. Sporocysts from 24 opo...