| serologic evidence of exposure of wild mammals to flaviviruses in the central and eastern united states. | serosurveys were conducted to obtain flavivirus and west nile virus (wnv) seroprevalence data from mammals. sera from 513 small- and medium-sized mammals collected during late summer and fall 2003 from colorado, louisiana, new york, ohio, and pennsylvania were screened for flavivirus-specific antibodies. sera samples containing antibody to flaviviruses were screened for wnv-specific antibodies by epitope-blocking enzyme-linked immunosorbent assays and confirmed with plaque reduction neutralizati ... | 2005 | 15891139 |
| acute fatal toxoplasmosis in squirrels (sciurus carolensis) with bradyzoites in visceral tissues. | acute toxoplasmosis was diagnosed in 3 gray squirrels (sciurus carolensis) from louisiana and pennsylvania. the predominant lesion was multifocal necrosis in several organs, especially of the lymph nodes. numerous toxoplasma gondii tachyzoites were seen in lesions, and the diagnosis was confirmed immunohistochemically by reaction with polyclonal t. gondii-specific antibodies. tissue cysts were seen in several organs, including lung alveoli. the presence of tissue cysts in alveoli of pet squirrel ... | 2006 | 16884019 |