SEROPREVALENCE OF VISCERAL LEISHMANIASIS AND ITS ASSOCIATED FACTORS AMONG ASYMPTOMATIC CHILDREN IN HADHRAMOUT VALLEY AND DESERT REGIONS, YEMEN

Hassan Mohammed Ali Mula Al-Dwailah; Khaled Abdulkareem Al-Moyed; Hassan Abdulwahab Al-Shamahy; Ahmed Mohamed Al-Haddad

doi:10.22270/ujpr.v7i6.866

Hassan Mohammed Ali Mula Al-Dwailah Medical Microbiology and Clinical Immunology Department, Faculty of Medicine and Health Sciences, Sana’a University.
Khaled Abdulkareem Al-Moyed Medical Microbiology and Clinical Immunology Department, Faculty of Medicine and Health Sciences, Sana’a University.
Hassan Abdulwahab Al-Shamahy Medical Microbiology and Clinical Immunology Department, Faculty of Medicine and Health Sciences, Sana’a University. Department of conservative dentistry, Faculty of Dentistry, Genius University for Sciences & Technology, Dhamar city. Medical Microbiology department, Faculty of Medicine, Genius University for Sciences & Technology, Dhamar city.
Ahmed Mohamed Al-Haddad Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Hadhramout University, Republic of Yemen.

10.22270/ujpr.v7i6.866

Keywords:

children, Hadhramout, immune-chromatographic assay, potential risk factors, prevalence, recombinant antigen K39, visceral leishmaniasis, Yemen

Abstract

Background and Aims: Visceral leishmaniasis (VL) is zoonotic and human illness produced by Leishmania species. Protozoan parasite is spread to the host vertebrate via sand fly female bite (Phlebotomus longipalpis), in which the infected promastigotes convert into amastigotes; and VL is associated with high fatality if left untreated. The aims of the current study were to uncover the prevalence and potential risk factors for VL in children in selected districts of Hadhramout governorate, Yemen.

Subjects and methods: Six districts were randomly selected from 24 districts in Hadhramout governorate as follows: Al-Sum, Al-Qattan, Tarim, Thamud, Seiyun, and Shibam. Then a target sample size of 400 children were randomly selected, 66 children were selected from each district except 70 children in Seiyun and they were selected from the selected schools and health centers. Serum specimens were assemble from all children to determine the rate of anti-VL antibodies in human by immunochromatographic assay using recombinant K39 antigen.

Results: The age of the children from 1-15 years, by a mean of 8.4±2.7 years. The positivity rate of Leishmania species antibodies by immune-chromatographic dipstick strip (rK39) was 5.8%. There was statistically considerable association connecting male gender and VL infection (8.0%, OR=3, CI=1.1-8.2, p=0.02). There was statistically important association linking older children (11-15 years( and contracting VL (9.1%, OR=2.6, CI=1.1- 6.2, p=0.02). There was a considerable association (<0.05) connecting the presence of rats, dogs, and goats in or around live houses and positive VL antibodies with an OR come to to 2.6, 3.7 and 2.8, respectively. There was no significant association between displacement or district location and incidence of VL.

Conclusion: Visceral leishmaniasis was highly prevalent in the desert and the valley areas of Hadramout among children, and visceral leishmaniasis potential risk factors were males, older children, dogs, rats, goats, litter, open sewers, and the presence of sand flies in the household.