Nosocomial transmission of a drug-sensitive W-variant Mycobacterium tuberculosis strain among patients with acquired immunodeficiency syndrome in Tennessee.
Infect Control Hosp Epidemiol
; 19(9): 635-9, 1998 Sep.
Article
em En
| MEDLINE
| ID: mdl-9778159
ABSTRACT
OBJECTIVE:
To use DNA fingerprinting to characterize nosocomial spread of Mycobacterium tuberculosis following hospitalization of a patient with acquired immunodeficiency syndrome and active pulmonary tuberculosis, for whom respiratory isolation was not initiated promptly.DESIGN:
Epidemiological investigation.SETTING:
A tertiary-care medical center in Tennessee.PARTICIPANTS:
Patients and healthcare workers potentially exposed to the infectious patient in 1992.RESULTS:
Of 172 healthcare workers exposed, 35 (20%) were judged to have acquired tuberculous infection. Risk of acquisition was greatest for nurses and medical receptionists. Active tuberculosis later developed in one healthcare worker and one hospitalized patient. Nosocomial transmission was supported by epidemiological evidence and DNA fingerprinting. The outbreak strain of Mycobacterium tuberculosis differed from other isolates at this hospital, but its DNA hybridization pattern was highly similar to that of the multidrug-resistant outbreak strain W that has been prevalent in New York City, suggesting a common strain ancestry. However, the Tennessee isolates were susceptible to all first-line antituberculous agents.CONCLUSIONS:
This report suggests the possibility that a molecular characteristic(s) shared by these successful outbreak strains is associated with increased transmissibility or pathogenicity and emphasizes the need for continued vigilance for tuberculosis in the nosocomial setting.
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Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
/
3_ND
/
4_TD
Base de dados:
MEDLINE
Assunto principal:
Recursos Humanos em Hospital
/
Tuberculose Pulmonar
/
DNA Bacteriano
/
Infecção Hospitalar
/
Surtos de Doenças
/
Infecções Oportunistas Relacionadas com a AIDS
/
Transmissão de Doença Infecciosa do Paciente para o Profissional
/
Mycobacterium tuberculosis
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Risk_factors_studies
Limite:
Humans
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Infect Control Hosp Epidemiol
Ano de publicação:
1998
Tipo de documento:
Article