Travel-associated non-typhoidal salmonellosis: geographical and seasonal differences and serotype distribution  K. Ekdahl, B. de Jong, R. Wollin, Y. Andersson  Clinical Microbiology and Infection  Volume 11, Issue 2, Pages 138-144 (February 2005) DOI: 10.1111/j.1469-0691.2004.01045.x Copyright © 2005 European Society of Clinical Infectious Diseases Terms and Conditions

Fig. 1 Seasonal pattern of notified cases of travelassociated non-typhoidal salmonellosis (1997–2003). The monthly odds ratios (OR) for Salmonella notifications are adjusted for age, gender and number of travellers in a multivariate logistic regression model. The OR should be interpreted as the relative risk compared with the month with the lowest risk, estimated for each region separately (a theoretical region with the same risk each month would then have OR of 1.0 for each month – regardless of the number of cases). Clinical Microbiology and Infection 2005 11, 138-144DOI: (10.1111/j.1469-0691.2004.01045.x) Copyright © 2005 European Society of Clinical Infectious Diseases Terms and Conditions