Incidence of tuberculosis in Olmsted County, Minnesota, 1990-2001

Sarah M. Jump, Jennifer St. Sauver, Amy L. Weaver, Stephanie M. Bagniewski, John W. Wilson, W Charles Huskins, Timothy Aksamit, W. Mark Brutinel, Marcella C. Scalcini, Irene Gaw Sia, Armando G. Correa, Kevin McCoy, Thomas G. Boyce

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Abstract

OBJECTIVE: To describe and compare the incidence and clinical characteristics of tuberculosis in Olmsted County, Minnesota, among US-born and foreign-born persons. PATIENTS AND METHODS: We performed a retrospective cohort study at the Mayo Clinic in Rochester, Minn, of all residents of Olmsted County (2000 population: 124,277) diagnosed as having tuberculosis between January 1, 1990, and December 31, 2001. Potential cases were identified with use of a computerized diagnostic coding database and microbiological laboratory data; all identified medical records were abstracted. Definite cases were those in which Mycobacterium tuberculosis was recovered in culture. Probable cases were those that met predefined clinical or radiographic evidence of tuberculosis and other criteria. Age-specific, sex-specific, and country of origin-specific incidence rates were calculated with use of Olmsted County census data. Variables were compared among risk groups using the Fisher exact test. RESULTS: During a 12-year period, 71 cases of tuberculosis (53 definite, 18 probable) were identified, for an incidence of 5.3 per 100,000 person-years. Of these cases, 54 (76%) occurred during the second half of the study (Incidence: 7.7 per 100,000 person-years). The incidence among US-born persons was similar throughout the study period; however, the incidence among foreign-born persons increased more than 3-fold during the second half of the study period. Twenty-five patients (35%) were former refugees. All Isoniazid-resistant Infections (12% of isolates) and multidrug-resistant infections (6% of isolates) occurred among foreign-born persons. CONCLUSION: The incidence of tuberculosis increased substantially in Olmsted County between 1990 and 2001, primarily because of an increase in the number of cases among foreign-born persons.

Original languageEnglish (US)
Pages (from-to)1119-1123
Number of pages5
JournalMayo Clinic Proceedings
Volume79
Issue number9
StatePublished - 2004

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Tuberculosis
Incidence
Cohort Studies
Refugees
Isoniazid
Censuses
Infection
Mycobacterium tuberculosis
Medical Records
Retrospective Studies
Databases
Population

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Jump, S. M., St. Sauver, J., Weaver, A. L., Bagniewski, S. M., Wilson, J. W., Huskins, W. C., ... Boyce, T. G. (2004). Incidence of tuberculosis in Olmsted County, Minnesota, 1990-2001. Mayo Clinic Proceedings, 79(9), 1119-1123.

Incidence of tuberculosis in Olmsted County, Minnesota, 1990-2001. / Jump, Sarah M.; St. Sauver, Jennifer; Weaver, Amy L.; Bagniewski, Stephanie M.; Wilson, John W.; Huskins, W Charles; Aksamit, Timothy; Brutinel, W. Mark; Scalcini, Marcella C.; Sia, Irene Gaw; Correa, Armando G.; McCoy, Kevin; Boyce, Thomas G.

In: Mayo Clinic Proceedings, Vol. 79, No. 9, 2004, p. 1119-1123.

Research output: Contribution to journalArticle

Jump, SM, St. Sauver, J, Weaver, AL, Bagniewski, SM, Wilson, JW, Huskins, WC, Aksamit, T, Brutinel, WM, Scalcini, MC, Sia, IG, Correa, AG, McCoy, K & Boyce, TG 2004, 'Incidence of tuberculosis in Olmsted County, Minnesota, 1990-2001', Mayo Clinic Proceedings, vol. 79, no. 9, pp. 1119-1123.
Jump SM, St. Sauver J, Weaver AL, Bagniewski SM, Wilson JW, Huskins WC et al. Incidence of tuberculosis in Olmsted County, Minnesota, 1990-2001. Mayo Clinic Proceedings. 2004;79(9):1119-1123.
Jump, Sarah M. ; St. Sauver, Jennifer ; Weaver, Amy L. ; Bagniewski, Stephanie M. ; Wilson, John W. ; Huskins, W Charles ; Aksamit, Timothy ; Brutinel, W. Mark ; Scalcini, Marcella C. ; Sia, Irene Gaw ; Correa, Armando G. ; McCoy, Kevin ; Boyce, Thomas G. / Incidence of tuberculosis in Olmsted County, Minnesota, 1990-2001. In: Mayo Clinic Proceedings. 2004 ; Vol. 79, No. 9. pp. 1119-1123.
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abstract = "OBJECTIVE: To describe and compare the incidence and clinical characteristics of tuberculosis in Olmsted County, Minnesota, among US-born and foreign-born persons. PATIENTS AND METHODS: We performed a retrospective cohort study at the Mayo Clinic in Rochester, Minn, of all residents of Olmsted County (2000 population: 124,277) diagnosed as having tuberculosis between January 1, 1990, and December 31, 2001. Potential cases were identified with use of a computerized diagnostic coding database and microbiological laboratory data; all identified medical records were abstracted. Definite cases were those in which Mycobacterium tuberculosis was recovered in culture. Probable cases were those that met predefined clinical or radiographic evidence of tuberculosis and other criteria. Age-specific, sex-specific, and country of origin-specific incidence rates were calculated with use of Olmsted County census data. Variables were compared among risk groups using the Fisher exact test. RESULTS: During a 12-year period, 71 cases of tuberculosis (53 definite, 18 probable) were identified, for an incidence of 5.3 per 100,000 person-years. Of these cases, 54 (76{\%}) occurred during the second half of the study (Incidence: 7.7 per 100,000 person-years). The incidence among US-born persons was similar throughout the study period; however, the incidence among foreign-born persons increased more than 3-fold during the second half of the study period. Twenty-five patients (35{\%}) were former refugees. All Isoniazid-resistant Infections (12{\%} of isolates) and multidrug-resistant infections (6{\%} of isolates) occurred among foreign-born persons. CONCLUSION: The incidence of tuberculosis increased substantially in Olmsted County between 1990 and 2001, primarily because of an increase in the number of cases among foreign-born persons.",
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T1 - Incidence of tuberculosis in Olmsted County, Minnesota, 1990-2001

AU - Jump, Sarah M.

AU - St. Sauver, Jennifer

AU - Weaver, Amy L.

AU - Bagniewski, Stephanie M.

AU - Wilson, John W.

AU - Huskins, W Charles

AU - Aksamit, Timothy

AU - Brutinel, W. Mark

AU - Scalcini, Marcella C.

AU - Sia, Irene Gaw

AU - Correa, Armando G.

AU - McCoy, Kevin

AU - Boyce, Thomas G.

PY - 2004

Y1 - 2004

N2 - OBJECTIVE: To describe and compare the incidence and clinical characteristics of tuberculosis in Olmsted County, Minnesota, among US-born and foreign-born persons. PATIENTS AND METHODS: We performed a retrospective cohort study at the Mayo Clinic in Rochester, Minn, of all residents of Olmsted County (2000 population: 124,277) diagnosed as having tuberculosis between January 1, 1990, and December 31, 2001. Potential cases were identified with use of a computerized diagnostic coding database and microbiological laboratory data; all identified medical records were abstracted. Definite cases were those in which Mycobacterium tuberculosis was recovered in culture. Probable cases were those that met predefined clinical or radiographic evidence of tuberculosis and other criteria. Age-specific, sex-specific, and country of origin-specific incidence rates were calculated with use of Olmsted County census data. Variables were compared among risk groups using the Fisher exact test. RESULTS: During a 12-year period, 71 cases of tuberculosis (53 definite, 18 probable) were identified, for an incidence of 5.3 per 100,000 person-years. Of these cases, 54 (76%) occurred during the second half of the study (Incidence: 7.7 per 100,000 person-years). The incidence among US-born persons was similar throughout the study period; however, the incidence among foreign-born persons increased more than 3-fold during the second half of the study period. Twenty-five patients (35%) were former refugees. All Isoniazid-resistant Infections (12% of isolates) and multidrug-resistant infections (6% of isolates) occurred among foreign-born persons. CONCLUSION: The incidence of tuberculosis increased substantially in Olmsted County between 1990 and 2001, primarily because of an increase in the number of cases among foreign-born persons.

AB - OBJECTIVE: To describe and compare the incidence and clinical characteristics of tuberculosis in Olmsted County, Minnesota, among US-born and foreign-born persons. PATIENTS AND METHODS: We performed a retrospective cohort study at the Mayo Clinic in Rochester, Minn, of all residents of Olmsted County (2000 population: 124,277) diagnosed as having tuberculosis between January 1, 1990, and December 31, 2001. Potential cases were identified with use of a computerized diagnostic coding database and microbiological laboratory data; all identified medical records were abstracted. Definite cases were those in which Mycobacterium tuberculosis was recovered in culture. Probable cases were those that met predefined clinical or radiographic evidence of tuberculosis and other criteria. Age-specific, sex-specific, and country of origin-specific incidence rates were calculated with use of Olmsted County census data. Variables were compared among risk groups using the Fisher exact test. RESULTS: During a 12-year period, 71 cases of tuberculosis (53 definite, 18 probable) were identified, for an incidence of 5.3 per 100,000 person-years. Of these cases, 54 (76%) occurred during the second half of the study (Incidence: 7.7 per 100,000 person-years). The incidence among US-born persons was similar throughout the study period; however, the incidence among foreign-born persons increased more than 3-fold during the second half of the study period. Twenty-five patients (35%) were former refugees. All Isoniazid-resistant Infections (12% of isolates) and multidrug-resistant infections (6% of isolates) occurred among foreign-born persons. CONCLUSION: The incidence of tuberculosis increased substantially in Olmsted County between 1990 and 2001, primarily because of an increase in the number of cases among foreign-born persons.

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