Onchocerciasis in Yemen: Time to take action against a neglected tropical parasitic disease

Rashad Abdul-Ghani, Mohammed A K Mahdy, John C Beier

Research output: Contribution to journalReview article

3 Citations (Scopus)

Abstract

Onchocerciasis is a neglected parasitic disease affecting the poorest underserved people in Yemen. A national control programme with goals to eliminate onchocerciasis has yet to be launched due to the current upheaval and social unrest in the country. The disease, locally termed as sowda, is unique in its clinicopathologic pattern, being of the localized, non-blinding, hyperreactive onchocercal skin disease. Although early reports identified endemic foci along seasonal watercourses, there is a need to redefine its epidemiologic patterns as well as health and socioeconomic impacts. Laboratory diagnosis of sowda among Yemeni patients is difficult due to the low load of microfilariae in skin snips and the presence of asymptomatic itching-free microfilaria carriers. Adoption of ivermectin use at three-month intervals as a control strategy has not been evaluated because the drug is mostly used in clinics and distributed to only a few affected communities. This paper addresses key aspects of onchocerciasis in Yemen and highlights the need for screening at-risk populations using highly sensitive techniques and mapping the distributions of the parasite in human and vector populations of blackflies. The new research should be integrated with the launch of a national onchocerciasis control programme to achieve onchocerciasis elimination.

Original languageEnglish (US)
Pages (from-to)133-141
Number of pages9
JournalActa Tropica
Volume162
DOIs
StatePublished - Oct 1 2016

Fingerprint

Yemen
onchocerciasis
Onchocerciasis
Parasitic Diseases
parasitoses
Microfilariae
microfilariae
Neglected Diseases
Simuliidae
Ivermectin
pruritus
Clinical Laboratory Techniques
skin diseases
ivermectin
at-risk population
Pruritus
Skin Diseases
skin (animal)
socioeconomics
Parasites

Keywords

  • Neglected tropical disease
  • Onchocerca volvulus
  • Simulium
  • Sowda
  • Yemen

ASJC Scopus subject areas

  • Parasitology
  • Infectious Diseases

Cite this

Onchocerciasis in Yemen : Time to take action against a neglected tropical parasitic disease. / Abdul-Ghani, Rashad; Mahdy, Mohammed A K; Beier, John C.

In: Acta Tropica, Vol. 162, 01.10.2016, p. 133-141.

Research output: Contribution to journalReview article

Abdul-Ghani, Rashad ; Mahdy, Mohammed A K ; Beier, John C. / Onchocerciasis in Yemen : Time to take action against a neglected tropical parasitic disease. In: Acta Tropica. 2016 ; Vol. 162. pp. 133-141.
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