| declining mortality in american crow (corvus brachyrhynchos) following natural west nile virus infection. | the american crow (corvus brachyrhynchos) is known to suffer 100% mortality from infection with the new york 1999 strain of west nile virus (wnv). following the initial detection of wnv in north america in 1999, we measured prevalence of wnv-reactive antibodies ("seroprevalence") in free-ranging american and fish crows (corvus ossifragus) of central new jersey after each transmission season through 2005. in 2002, seroprevalence in american crow juveniles increased to 14% from the 5% of the previ ... | 2009 | 19848089 |