Epidemiology and Infection

Special Article

Epidemiology of shigellosis in Teknaf, a coastal area of Bangladesh: a 10-year survey

Md. Anowar Hossaina1, M. John Alberta1 and Kh. Zahid Hasana1

a1 International Centre for Diarrhoeal Disease Research, PO Box 128, Dhaka 1000, Bangladesh

Abstract

The epidemiological data on shigellosis in Teknaf, a coastal area of Bangladesh, were reviewed for a 10-year period (1975–84). Certain similarities and differences were observed in the epidemiology of the disease in Teknaf when compared with urban Dhaka and rural Matlab. Similarities included: round-the-year infection with two peaks, one in the monsoon period and the other in the winter period; high male to female attendance ratio at the treatment centre: the predominance of infection in the under-15-year age group; high mortality rate in the under-5-year age group of both sexes and in females of all age groups; the multiple drug resistance of organisms. Differences included the higher isolation rate of organisms in Teknaf (42·1 % as against 11–12% in Dhaka and Matlab) and the preponderance of Shigella dysenteriae 1 infection in females in Teknaf. The unusually high isolation rate of shigella makes Teknaf the area with the highest incidence of shigellosis in Bangladesh.

(Accepted February 19 1990)

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