Household contact with pets and birds and risk of lymphoma


Bellizzi, S; Cocco, P; Zucca, M; D'Andrea, I; Sesler, S; Monne, M; Onida, A; Piras, G; Uras, A; Angelucci, E; Gabbas, A; Rais, M; Nitsch, D; Ennas, MG; (2011) Household contact with pets and birds and risk of lymphoma. Cancer causes & control, 22 (2). pp. 159-165. ISSN 0957-5243 DOI: https://doi.org/10.1007/s10552-010-9661-z

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Abstract

Contact with household pets has been suggested to be inversely associated with lymphoma risk. We tested the hypothesis in a case-control study of lymphoma in the Sardinia region of Italy. Cases were 326 patients, first diagnosed with lymphoma in 1999-2003. Controls were 464 population controls, frequency matched to cases by age, gender, and area of residence. In person interviews included self-reported household contact with pets and birds, type of pet(s), and age at starting contact. Frequent contact with birds was inversely associated with lymphoma, and particularly B-cell non-Hodgkin lymphoma (odds ratio [OR] = 0.6, 95% confidence interval [95% CI]: 0.4, 0.9). Contact with chickens accounted for this inverse association, which was strongest for first contact occurring at age a parts per thousand currency sign8 years (OR = 0.4, 95% CI: 0.2, 1.0). No association was observed when first contact occurred at age 9 or older. Contact with any pets was inversely associated with risk of diffuse large B-cell lymphoma (OR = 0.4, 95% CI: 0.2, 1.0), but not other lymphoma subtypes. Our results support the hypothesis that early-life exposure to pets, birds and particularly with chickens might be associated with a reduced risk of lymphoma.

Item Type: Article
Keywords: Lymphoma, Epidemiology, Lifestyle, Animals, domestic, NON-HODGKIN-LYMPHOMA, CONTROL-STUDY EPILYMPH, FRANCISCO BAY AREA, INTERLYMPH-CONSORTIUM, MALIGNANT-LYMPHOMA, BIRTH-ORDER, INFECTION, EXPOSURE, MYELOMA, ALLERGIES
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Non-Communicable Disease Epidemiology
Research Centre: Centre for Global Non-Communicable Diseases (NCDs)
PubMed ID: 21153695
Web of Science ID: 286465000001
URI: http://researchonline.lshtm.ac.uk/id/eprint/1362

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