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Tuberculosis among foreign-born persons in Los Angeles County, 1992-1994

P L Zuber1, L S Knowles, N J Binkin

  • 1Division of Tuberculosis Elimination, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA.

Tubercle and Lung Disease : the Official Journal of the International Union Against Tuberculosis and Lung Disease
|December 1, 1996
PubMed
Summary

Foreign-born individuals represent 64% of tuberculosis (TB) cases in Los Angeles County. Current screening effectively identifies TB in recent Southeast Asian immigrants but is less effective for Mexican and Central American immigrants.

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Area of Science:

  • Epidemiology
  • Public Health
  • Infectious Disease Control

Background:

  • Foreign-born individuals constitute a significant proportion of tuberculosis (TB) cases.
  • Understanding the epidemiology of TB in immigrant populations is crucial for effective public health strategies.

Purpose of the Study:

  • To analyze the epidemiology of TB among foreign-born individuals in Los Angeles County.
  • To assess the efficacy of current TB screening and follow-up protocols for immigrants and refugees (I&R).

Main Methods:

  • Retrospective analysis of the Los Angeles County TB registry (October 1992 - December 1994).
  • Matching TB cases with a database tracking immigrants and refugees (I&R) who arrived in the USA during fiscal year 1993 (FY93).

Main Results:

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  • Foreign-born individuals comprised 64% of all reported TB cases.
  • Incidence rates were significantly higher in foreign-born groups compared to US-born individuals, particularly for Asians.
  • Screening identified a high proportion of TB cases among recently arrived Southeast Asians, but fewer among Mexicans and Central Americans.

Conclusions:

  • While Mexicans and Central Americans represent the majority of foreign-born TB cases, their incidence is lower than that of Asians.
  • Current screening protocols are effective for recently arrived Southeast Asians but show limited impact on TB control among Mexicans and Central Americans.