Author/Authors :
Seidahmed, O.M.E. Ministry of Health - National Health Laboratory - Department of Medical Entomology, Sudan , Siam, H.A.M. Ministry of Health - National Health Laboratory - Department of Medical Entomology, Sudan , Soghaier, M.A. Ministry of Health - National Control Programme of Epidemics and Zoonotic Diseases, Sudan , Abubakr, M. Ministry of Health - Department of Environmental Health, Sudan , Osman, H.A. Ministry of Health of Red Sea State, Sudan , Abd Elrhman, L.S. Ministry of Health of Red Sea State, Sudan , Elmagbol, B. Ministry of Health - National Control Programme of Epidemics and Zoonotic Diseases, Sudan , Velayudhan, R. World Health Organization - Department of Control of Neglected Tropical Diseases, Switzerland
Abstract :
An unprecedented dengue outbreak occurred in 2010 in Port Sudan city, Sudan. Dengue incidence was 94 cases per 10 000 observed over 17 epidemiological weeks (total cases = 3 765). We report here the impact of the vector control response plan to the outbreak, which mainly entailed house inspection and insecticide space spraying. In total 3 048 houses were inspected during vector surveillance and 19 794 larvae and 3 240 pupae of Aedes aegypti were collected. Entomological indices decreased during the period: house index declined from 100% to 16% (F = 57.8, P 0.001) and pupal/person (P/P) index from 0.77 to 0.10 (F = 3.06, P 0.01) in weeks 9 and 21 respectively. This decline was accompanied by a decrease in cases from a peak of 341 cases in week 13 to zero in week 29 and the end of the outbreak. There was a significant correlation between the entomological parameters and dengue incidence (R2 = 0.83, F= 23.9, P 0.001). Integrated epidemiological and vector surveillance is essential to an effective dengue control programme
