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. 2013 Mar;54(1):29-34.

Impact of immigration on burden of tuberculosis in Umbria: a low-incidence Italian region with high immigrants rates

N Buonora  1 , M Chiavarini  2 , L Salmasi  2 , M D Giaimo  3 , L Minelli  4
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Impact of immigration on burden of tuberculosis in Umbria: a low-incidence Italian region with high immigrants rates

N Buonora et al. J Prev Med Hyg. 2013 Mar.

Abstract

Introduction: In Italy, Tubercolosis (TB) has increasingly become a disease for specific population subgroups such as immigrants. The objective of this paper is to describe the trend in TB incidence from 1999 to 2008 in Umbria: a low-incidence Italian region with high immigrants rates.

Methods: Data were obtained from the Regional Information System for Infectious Diseases. Using a linear regressions model we estimated trends for number of cases and incidence rates; with a logistic regression model we estimated the effect of a set of covariates on the probability of being affected by TB.

Result: 590 TB cases were reported of whom 254 (43%) were foreign. In 2008 39.7 new cases per 100.000 were registered among foreign-born subjects. TB incidence among Italians was 3.8/100.000 Italians. But a linear regression analysis showed a statistically significant decreasing trend in the notification rate among foreign-born people (coef: -7.32, r2:0.57, p < 0.05). The probability to be affected by extra-pulmonary is significantly larger in foreign patients (OR = 0.72, CI = 0.48-1.07). Foreign unskilled workers report a higher probability to be affected by TB (OR = 19.05, CI = 6.01-60.4).

Discussion: Increasing immigration rates may affect TB epidemiology. The analysis of incidence trends is an important toolfor monitoring tuberculosis disease control and to identify specific sub-group at risk.

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Figures

Fig. 1.
Fig. 1.
TB incidence rates (/100.000 population per year) in the Italy born (left scale) and not-Italy born (right scale) population: denominators with and without estimated not regularly registered presences. Umbria region, Italy: 1999-2008.
See this image and copyright information in PMC

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