title: Paired city cryptosporidium serosurvey in the southwest USA.
abstract: In 1996, serological responses to two Cryptosporidium antigens were determined for 200 Las Vegas (LV), Nevada, and 200 Albuquerque, New Mexico, blood donors to evaluate associations between endemic infections, water exposures, and other risk factors. LV uses chlorinated filtered drinking water from Lake Mead while Albuquerque uses chlorinated ground water. The intensity of serological response to both markers was higher for older donors (P < 0.05). donors who washed food with bottled water (P < 0.05) and donors from LV (P < 0.05). A decreased serological response was not associated with bottled water consumption, nor was an increased response associated with self-reported cryptosporidiosis-like illness or residence in LV at the time of a cryptosporidiosis outbreak 2 years earlier. Although these findings suggest the serological response may be associated with type of tap water and certain foods, additional research is needed to clarifythe role of both food and drinking water in endemic Cryptosporidium infection.
authors.affiliation: The Lovelace Clinic Foundation, Albuquerque 87108, USA.
authors.forename: F J
authors.initials: FJ
authors.lastname: Frost
authors.forename: T
authors.initials: T
authors.lastname: Muller
authors.forename: G F
authors.initials: GF
authors.lastname: Craun
authors.forename: R L
authors.initials: RL
authors.lastname: Calderon
authors.forename: P A
authors.initials: PA
authors.lastname: Roefer
mesh_terms: D000328:Adult; D000818:Animals; D000953:Antigens, Protozoan / Q000097:blood*; D001130:Arizona / Q000453:epidemiology; D003457:Cryptosporidiosis / Q000453:epidemiology* / Q000209:etiology; D003458:Cryptosporidium / Q000302:isolation & purification*; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009505:Nevada / Q000453:epidemiology; D016036:Seroepidemiologic Studies; D014881:Water Supply
chemical_list: D000953:Antigens, Protozoan