Blood Group, Immunity, and Risk of Infection with
Vibrio cholerae
in an Area of Endemicity
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Published:2005-11
Issue:11
Volume:73
Page:7422-7427
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ISSN:0019-9567
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Container-title:Infection and Immunity
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language:en
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Short-container-title:Infect Immun
Author:
Harris Jason B.12, Khan Ashraful I.3, LaRocque Regina C.14, Dorer David J.5, Chowdhury Fahima3, Faruque Abu S. G.3, Sack David A.3, Ryan Edward T.146, Qadri Firdausi3, Calderwood Stephen B.147
Affiliation:
1. Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts 2. Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts 3. ICDDR,B: Centre for Health and Population Research, Dhaka, Bangladesh 4. Department of Medicine, Harvard Medical School, Boston, Massachusetts 5. Department of Biostatistics, Massachusetts General Hospital, Boston, Massachusetts 6. Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts 7. Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, Massachusetts
Abstract
ABSTRACT
Individuals with blood group O are more susceptible than other individuals to severe cholera, although the mechanism underlying this association is unknown. To assess the respective roles of both intrinsic host factors and adaptive immune responses that might influence susceptibility to infection with
Vibrio cholerae
, we prospectively followed a cohort of household contacts of patients with cholera in Bangladesh. In this study, we made the novel observation that persons with blood group O were less likely than those with other blood groups to become infected with
V. cholerae
O1 (odds ratio [OR], 0.67; 95% confidence interval [CI], 0.53 to 0.85;
P
= 0.008). Consistent with prior studies, however, household contacts with blood group O were more likely to develop severe illness if infected with
V. cholerae
O1 (OR, 2.3; 95% CI, 0.98 to 5.59;
P
= 0.05). While blood group O protected significantly against infection with
V. cholerae
O1, there was no evidence of protection against
V. cholerae
O139. A multivariate analysis demonstrated that the association between blood group O and protection from infection with
V. cholerae
O1 was independent of age, gender, and baseline anti-cholera toxin and vibriocidal antibody titers. Based on this epidemiologic evidence, we propose a hypothesis for understanding the association between blood group O and the risk of infection with
V. cholerae
O1 and O139 as well as the risk of developing severe symptoms once infected.
Publisher
American Society for Microbiology
Subject
Infectious Diseases,Immunology,Microbiology,Parasitology
Reference29 articles.
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