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Titolo:
Trends in the prevalence and incidence of tuberculosis in South India
Autore:
Radhakrishna, S; Frieden, TR; Subramani, R; Kumaran, P; Narayanan, PR;
Indirizzi:
TB Res Ctr, Chetput 600031, Chennai, India TB Res Ctr Chetput Chennai India 600031 r, Chetput 600031, Chennai, India
Titolo Testata:
INTERNATIONAL JOURNAL OF TUBERCULOSIS AND LUNG DISEASE
fascicolo: 2, volume: 5, anno: 2001,
pagine: 142 - 157
SICI:
1027-3719(200102)5:2<142:TITPAI>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
RURAL-POPULATION; ANNUAL RISK; INFECTION; COUNTRY;
Keywords:
tuberculosis; south India; epidemiological trends; prevalence and incidence; disease and infection;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Narayanan, PR TB Res Ctr, Mayor VR Ramanathan Rd, Chetput 600031, Chennai,India TB Res Ctr Mayor VR Ramanathan Rd Chetput Chennai India 600031
Citazione:
S. Radhakrishna et al., "Trends in the prevalence and incidence of tuberculosis in South India", INT J TUBE, 5(2), 2001, pp. 142-157

Abstract

OBJECTIVE: TO study trends in the prevalence and incidence of tuberculosisin south India. METHODS: Tn 1968-1970, about 100 000 subjects were surveyed for tuberculosis and followed thereafter for 15 years, mainly by repeat survey once every2.5 years. New entrants were inducted at every repeat survey. Radiographicexamination of subjects aged 5 years or more and sputum smear and culture examinations of those with an abnormal shadow were undertaken; tuberculin tests were done initially on all, and at 4, 10 and 15 years in selected samples of those aged 1-9 years. RESULTS: The prevalence of culture-positive tuberculosis decreased by 1.4%per annum to 634/100000, while that of smear-p ositive tuberculosis showedno significant decrease from 457/100000. The annual incidence of culture-positive tuberculosis decreased by 4.3 %/annum to 189/100000 and that of smear-positive tuberculosis decreased by 2.3%/annum to 113/100000. Decreases in incidence occurred exclusively in those with abnormal radiographic findings suggestive of tuberculosis at the start of the period. The annual risk of tuberculosis infection (ARTI) was initially 2%, and showed no sign of decline over the period. CONCLUSION: The prevalence of tuberculosis and ARTI showed little or no decrease over the 15-year period. A significant decrease in incidence occurred, but exclusively in those with abnormal radiograph suggestive of tuberculosis at the start of the period.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/01/20 alle ore 15:25:47