National mapping of schistosomiasis, soil-transmitted helminthiasis and anaemia in Yemen: Towards better national control and elimination.

<h4>Background</h4>Schistosomiasis (SCH) and soil-transmitted helminthiasis (STH) are known to be endemic in Yemen. However, the distribution of both diseases had not previously been assessed by a well-structured national mapping study covering all governorates. The main aim of this stud...

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Main Authors: Nur Alia Johari (Author), Dhekra Amin Annuzaili (Author), Hani Farouk El-Talabawy (Author), Maryam Ba-Break (Author), Abdulsalam M Al-Mekhlafi (Author), Samira Al-Eryani (Author), Abdulhakim Ali Alkohlani (Author), Albis Francesco Gabrielli (Author), Riadh Ben-Ismail (Author), Sami Alhaidari (Author), Adel Muaydh (Author), Rasheed Alshami (Author), Magid Al Gunaid (Author), Alaa Hamed (Author), Nehad Kamel (Author), Karen Palacio (Author), Fiona Fleming (Author), Michael Duncan French (Author)
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Published: Public Library of Science (PLoS), 2022-03-01T00:00:00Z.
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100 1 0 |a Nur Alia Johari  |e author 
700 1 0 |a Dhekra Amin Annuzaili  |e author 
700 1 0 |a Hani Farouk El-Talabawy  |e author 
700 1 0 |a Maryam Ba-Break  |e author 
700 1 0 |a Abdulsalam M Al-Mekhlafi  |e author 
700 1 0 |a Samira Al-Eryani  |e author 
700 1 0 |a Abdulhakim Ali Alkohlani  |e author 
700 1 0 |a Albis Francesco Gabrielli  |e author 
700 1 0 |a Riadh Ben-Ismail  |e author 
700 1 0 |a Sami Alhaidari  |e author 
700 1 0 |a Adel Muaydh  |e author 
700 1 0 |a Rasheed Alshami  |e author 
700 1 0 |a Magid Al Gunaid  |e author 
700 1 0 |a Alaa Hamed  |e author 
700 1 0 |a Nehad Kamel  |e author 
700 1 0 |a Karen Palacio  |e author 
700 1 0 |a Fiona Fleming  |e author 
700 1 0 |a Michael Duncan French  |e author 
245 0 0 |a National mapping of schistosomiasis, soil-transmitted helminthiasis and anaemia in Yemen: Towards better national control and elimination. 
260 |b Public Library of Science (PLoS),   |c 2022-03-01T00:00:00Z. 
500 |a 1935-2727 
500 |a 1935-2735 
500 |a 10.1371/journal.pntd.0010092 
520 |a <h4>Background</h4>Schistosomiasis (SCH) and soil-transmitted helminthiasis (STH) are known to be endemic in Yemen. However, the distribution of both diseases had not previously been assessed by a well-structured national mapping study covering all governorates. The main aim of this study was, therefore, to map the prevalence of SCH and STH in Yemen in order to better inform implementation of effective national control and elimination interventions. The assessment of the distribution of anaemia was also included as a well-known consequence of infection with both SCH and STH. Secondarily, the study aimed to provide a broad indication of the impact of large-scale treatment on the distribution of infection.<h4>Methodology and principal findings</h4>To achive these aims, 80,432 children (10-14 years old) from 2,664 schools in 332 of Yemen's 333 districts were included, in 2014, into this national cross-sectional survey. Countrywide, 63.3% (210/332) and 75.6% (251/332) of districts were found to be endemic for SCH and STH respectively. More districts were affected by intestinal than urogenital SCH (54.2% and 31.6% respectively). SCH infection was mostly mild and moderate, with no districts reporting high infection. One quarter (24.4%) of Yemeni districts had high or moderate levels of Ascaris lumbricoides infection. Infection with Trichuris trichiura was the second most common STH (44.9% of districts infected) after A. lumbricoides (68.1%). Hookworm was the least prevalent STH (9.0%). Anaemia was prevalent in 96.4% of districts; it represented a severe public health problem (prevalence ≥ 40%) in 26.5% of districts, and a mild to moderate problem in two thirds of the districts (33.7% and 36.1% respectively).<h4>Conclusion</h4>This study provided the first comprehensive mapping of SCH, STH, and anaemia across the country. This formed the basis for evaluating and continuing the national control and elimination programme for these neglected tropical diseases in Yemen. 
546 |a EN 
690 |a Arctic medicine. Tropical medicine 
690 |a RC955-962 
690 |a Public aspects of medicine 
690 |a RA1-1270 
655 7 |a article  |2 local 
786 0 |n PLoS Neglected Tropical Diseases, Vol 16, Iss 3, p e0010092 (2022) 
787 0 |n https://doi.org/10.1371/journal.pntd.0010092 
787 0 |n https://doaj.org/toc/1935-2727 
787 0 |n https://doaj.org/toc/1935-2735 
856 4 1 |u https://doaj.org/article/d8fe31a3db3d4606a8a908eda7dd328f  |z Connect to this object online.