Erschienen in:
01.02.2011 | Original paper
Household contact with pets and birds and risk of lymphoma
verfasst von:
Saverio Bellizzi, Pierluigi Cocco, Mariagrazia Zucca, Ileana D’Andrea, Simonetta Sesler, Maria Monne, Angela Onida, Giovanna Piras, Antonella Uras, Emanuele Angelucci, Attilio Gabbas, Marco Rais, Dorothea Nitsch, Maria G. Ennas
Erschienen in:
Cancer Causes & Control
|
Ausgabe 2/2011
Einloggen, um Zugang zu erhalten
Abstract
Background
Contact with household pets has been suggested to be inversely associated with lymphoma risk.
Methods
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.
Results
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 ≤8 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.
Conclusion
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.