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March 17, 2026The Brazilian Journal of Infectious Diseases0 citationsOpen Access

Tuberculosis Among Immigrants in Paraná: Epidemiological Overview

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ACAna Carolina Pereira de CastroEFEvandro Carlos Martinho da FonteLFLivia Heloisa de Freitas

Key Points

  • This research aims to describe the epidemiological and clinical characteristics of tuberculosis cases among immigrants in Paraná.
  • Descriptive study based on Notifiable Diseases Information System notifications from 2022 to 2024.
  • Analyzed variables include age, sex, education, area of residence, and diagnostic test results.
  • Used simple frequencies and Pearson’s chi-square test for analysis.
  • A total of 110 tuberculosis cases reported among immigrants with a progressive increase over the years.
  • Majority of cases occurred in urban areas, particularly among adult males aged 19-59 years.
  • Pulmonary tuberculosis was the most common form, with 46.4% having positive smear microscopy.

Abstract

Tuberculosis (TB) disproportionately affects vulnerable groups, including immigrant populations, who are often exposed to precarious living conditions, language barriers, and difficulties accessing health services. With increased migration to Brazil in recent years, understanding the epidemiological profile of TB among immigrants is essential. This study aimed to describe the sociodemographic and clinical profile of TB cases reported among immigrants in the state of Paraná. Descriptive study based on notifications from the Notifiable Diseases Information System between 2022 and 2024. Variables analyzed included year of notification, health region, age group, sex, education level, area of residence, clinical form, type of case entry, and diagnostic test results. Analyses included simple frequencies and Pearson’s chi-square test. CAAE 38855820.6.0000.5231. A total of 110 TB cases among immigrants were reported, with progressive increase: 16.4% in 2022, 33.6% in 2023, and 50.0% in 2024. The 2nd Health Region of Curitiba accounted for 34.5% of cases, followed by Cascavel (16.4%) and Foz do Iguaçu (15.5%). Most cases occurred among adults aged 19–59 years (85.5%; mean age 32.1 years), males (62.7%), and urban residents (86.4%). Regarding education, 31.8% had up to nine years of schooling. The pulmonary form predominated (77.3%), as did new cases (69.1%). Among diagnostic tests, 46.4% had positive smear microscopy, 76.4% suggestive chest X-Ray, 30.9% positive culture, 54.5% rifampicin-sensitive molecular test, and 16.4% TB-HIV coinfection. Only 10.9% of coinfected patients were on antiretroviral therapy. Drug resistance occurred in 3.6% of cases. Outcomes included cure in 26.4%, transfer in 16.4%, death from other causes in 5.5%, and treatment interruption in 4.5%. An increase in TB cases among immigrants in Paraná was observed, concentrated among adult men with low education living in urban areas. These findings reinforce the need for continuous epidemiological monitoring, specific public policies, and actions aimed at early diagnosis, treatment adherence, and equitable access to health services.

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Cite This Study

Castro et al. (2026) studied this question.

synapsesocial.com/papers/69b8ef52deb47d591b8c5507https://doi.org/10.1016/j.bjid.2026.105773
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