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Bancroftian filariasis in Pondicherry, South India: 2. Epidemiological evaluation of the effect of vector control

Published online by Cambridge University Press:  15 May 2009

S. Subramanian ,
S. P. Pani ,
P. K. Das  and
P. K. Rajagopalan
S. Subramanian
Affiliation:
Vector Control Research Centre (Indian Council of Medical Research), Indira Nagar, Pondicherry—605 006, India
S. P. Pani
Affiliation:
Vector Control Research Centre (Indian Council of Medical Research), Indira Nagar, Pondicherry—605 006, India
P. K. Das
Affiliation:
Vector Control Research Centre (Indian Council of Medical Research), Indira Nagar, Pondicherry—605 006, India
P. K. Rajagopalan
Affiliation:
Vector Control Research Centre (Indian Council of Medical Research), Indira Nagar, Pondicherry—605 006, India
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Summary

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This article examines the evaluation of a bancroftian filariasis control programme undertaken in Pondicherry from 1981–5. Integrated vector management was applied in one half of the town, and routine operations under the national programme (larviciding and chemotherapy) continued in the comparison area. The programme was evaluated by monitoring relative change in the epidemiological statistics of both populations. The results indicate that there was significant reduction in prevalence of microfilaraemia in juveniles in the controlled area. An apparent reduction in intensity of microfilaraemia was also observed but this was a consequence of the reduction in prevalence, since the density of microfilariae remained unchanged. The results suggest that primary constraints on the epidemiological evaluation of the vector control of filariasis are the longevity and the population characteristics of the parasite.

Type
Research Article
Information
Epidemiology & Infection , Volume 103 , Issue 3 , December 1989 , pp. 693 - 702
Copyright
Copyright © Cambridge University Press 1989

References

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