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Developing the first national database and map of lymphatic filariasis clinical cases in Bangladesh: Another step closer to the elimination goals

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Listed:
  • Mohammad J Karim
  • Rouseli Haq
  • Hayley E Mableson
  • A S M Sultan Mahmood
  • Mujibur Rahman
  • Salim M Chowdhury
  • A K M Fazlur Rahman
  • Israt Hafiz
  • Hannah Betts
  • Charles Mackenzie
  • Mark J Taylor
  • Louise A Kelly-Hope

Abstract

Background: The Bangladesh Lymphatic Filariasis (LF) Elimination Programme has made significant progress in interrupting transmission through mass drug administration (MDA) and has now focussed its efforts on scaling up managing morbidity and preventing disability (MMDP) activities to deliver the minimum package of care to people affected by LF clinical conditions. This paper highlights the Bangladesh LF Programme’s success in conducting a large-scale cross-sectional survey to determine the number of people affected by lymphoedema and hydrocoele, which enabled clinical risk maps to be developed for targeted interventions across the 34 endemic districts (19 high endemic; 15 low endemic). Methodology/Principal findings: In the 19 high endemic districts, 8,145 community clinic staff were trained to identify and report patients in their catchment area. In the 15 low endemic districts, a team of 10 trained field assistants conducted active case finding with cases reported via a SMS mHealth tool. Disease burden and prevalence maps were developed, with morbidity hotspots identified at sub-district level based on a combination of the highest prevalence rates per 100,000 and case-density rates per square kilometre (km2). The relationship between morbidity and baseline microfilaria (mf) prevalence was also examined. In total 43,678 cases were identified in the 19 high endemic districts; 30,616 limb lymphoedema (70.1%; female 55.3%), 12,824 hydrocoele (29.4%), and 238 breast/female genital swelling (0.5%). Rangpur Division reported the highest cases numbers and prevalence of lymphoedema (26,781 cases, 195 per 100,000) and hydrocoele (11661 cases, 169.6 per 100,000), with lymphoedema predominately affecting females (n = 21,652). Rangpur and Lalmonirhat Districts reported the highest case numbers (n = 11,199), and prevalence (569 per 100,000) respectively, with five overlapping lymphoedema and hydrocoele sub-district hotspots. In the 15 low endemic districts, 732 cases were identified; 661 lymphoedema (90.2%; female 39.6%), 56 hydrocoele (7.8%), and 15 both conditions (2.0%). Spearman’s correlation analysis found morbidity and mf prevalence significantly positively correlated (r = 0.904; p

Suggested Citation

  • Mohammad J Karim & Rouseli Haq & Hayley E Mableson & A S M Sultan Mahmood & Mujibur Rahman & Salim M Chowdhury & A K M Fazlur Rahman & Israt Hafiz & Hannah Betts & Charles Mackenzie & Mark J Taylor & , 2019. "Developing the first national database and map of lymphatic filariasis clinical cases in Bangladesh: Another step closer to the elimination goals," PLOS Neglected Tropical Diseases, Public Library of Science, vol. 13(7), pages 1-21, July.
  • Handle: RePEc:plo:pntd00:0007542
    DOI: 10.1371/journal.pntd.0007542
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