Horses naturally infected with EIAV harbor 2 distinct SU populations but are monophyletic with respect to IN.

Equine infectious anemia virus (EIAV) causes lifelong infections ranging from acutely fatal, to chronic, to asymptomatic. Within infected animals, EIAV is found as a quasispecies. Many experimental studies on EIAV, carried out in the U.

West Nile virus infection incidence based on donated blood samples and neuroinvasive disease reports, Northern Texas, USA, 2012.

During the 2012 outbreak of West Nile virus in the United States, approximately one third of the cases were in Texas. Of those, about half occurred in northern Texas. Models based on infected blood donors and persons with neuroinvasive disease showed, respectively, that ≈0.

Exposure to Helicobacter pylori-positive siblings and persistence of Helicobacter pylori infection in early childhood.

Objectives: Cross-sectional studies suggest that Helicobacter pylori may be transmitted between siblings. The present study aimed to estimate the effect of an H pylori-infected sibling on the establishment of a persistent H pylori infection.

Materials And Methods: The authors used data collected from a Texas-Mexico border population from 1998 to 2005 (the "Pasitos Cohort Study").

Gastric cardia adenocarcinoma in Taiwanese men: positive associations due to selection bias.

The factors associated with an increase in gastric cardia adenocarcinoma are poorly understood. Environmental factors such as Helicobacter pylori (H. pylori) infection and diet have been hypothesized to play a role in the recently increased risk of this disease, but additional studies are needed.