The pathology of human West Nile Virus infection.

West Nile Virus (WNV) was identified by immunohistochemistry (IHC) and polymerase chain reaction (PCR) as the etiologic agent in 4 encephalitis fatalities in New York City in the late summer of 1999. The fatalities occurred in persons with a mean age of 81.5 years, each of whom had underlying medical problems.

[Occurrence of Helicobacter pylori in patients with gastroesophageal tumors].

Authors examined the occurrence of H. p. retrospectively in bioptic material for three years.

Eosinophilic pleural effusions.

Forty-three pleural fluids from 30 patients with eosinophilic pleural effusion (EPE) were examined and correlated with biochemical and clinical findings. The percentage of eosinophiles ranged from 12% to 83%, averaged 38% and was accompanied by a high lymphocyte count, averaging 34%. The fluids were shown to be exudates.