|DIAGNOSIS OF SPUTUM POSITIVE TUBERCULOSIS CASES
PREVALENT IN A DISTRICT OF SOUTH INDIA
|R Channabasavaiah & AK Chakraborty: J Com Dis
1979, 11, 101-11.
The results of the tuberculosis prevalence surveys
carried out in 59 villages of Tumkur district, Karnataka in 196l
before launching the District Tuberculosis Control Programme (1964)
and the second one, nine years after the introduction of the programme
(1973), were compared.
The prevalence rates in both the surveys were similar
viz. 0.41 per cent in 1961 and 0.44 per cent in 1973 indicating
the poor impact of the programme. The present analysis provides
information on long term cumulative performance of the District
Tuberculosis Programme (DTP) in diagnosing the cases detected in
a prevalence survey at a point of time. Of the 70 cases diagnosed
during I survey 12 (17.1%), and of 121 during II survey 20 (16.5%)
were diagnosed by the District TB Programme independently over a
total period of 19 years. Of the 12 DTP cases of I survey, 1/3rd
were diagnosed by DTP within 3 years and the remaining were distributed
over a period of 12 years. Similarly, of the 20 cases of II survey,
45% were found within 3 years after the survey and 25% within 3
year periods immediately prior to it. In subsequent years, Case-finding activity about these prevalence cases was erratic and at
much lower rate. There was no difference between smear positive
and culture positive survey cases with respect to their diagnosis
by DTP. The changes brought about in the prevalence of cases from
year to year by death, cure, incidence and performance of DTP, in
diagnosing such prevalence cases, could not be studied from the
available material. Under reporting of the diagnosed cases
and missed diagnosis are attributed to be the main factors
for poor performance of the DTP.
|KEY WORDS: PREVALENCE, CASE, CONTROL PROGRAMME,
RURAL POPULATION, CASE DETECTION, IMPACT.