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. 1998 Jan-Feb;40(1):47-52.

[Prevalence of tuberculosis infection in students in the city of Tijuana, Mexico]

[Article in Spanish]
R Laniado-Laborín  1 , N Cabrales-Vargas, G López-Espinoza, J L Lepe-Zúñiga, S Quiñonez-Moreno, C E Rico-Vargas
Affiliations
  • PMID: 9580502

[Prevalence of tuberculosis infection in students in the city of Tijuana, Mexico]

[Article in Spanish]
R Laniado-Laborín et al. Salud Publica Mex. 1998 Jan-Feb.

Abstract

Objective: To determine the prevalence of tuberculosis infection in school children from Tijuana, Mexico.

Material and methods: A study sample was randomly chosen from the municipal school registry and 1,131 elementary and high school children were included. All received one doses of PPD 5TU (Mantoux). Subjects with induration > or = 10 mm were considered positive reactors.

Results: The overall prevalence of positive reactors was 57%. The proportion of positive reactors was significantly higher among BCG-immunized subjects than in non-immunized individuals (59.7 vs 45.6%; p < 0.001). Correlation was not significant between age of immunization with BCG and diameter of induration.

Conclusions: The prevalence of tuberculosis infection in Tijuana is extremely high; this fact has important implications in the control of tuberculosis in this region.

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