Effect of school based treatment on the prevalence of schistosomiasis in endemic area in yemen.
AbstractBackground: Schistosomiasis and soil transmitted infection is a major health problem of children from rural areas of developing countries including Yemen. In an attempt to reduce this burden, the Ministry of Public Health and Population in Yemen established in 2002 a programme for Schisto-somal, soil transmitted infection control that aimed to reduce morbidity and prevalence rates of Schistosomiasis, and Soil transmitted helminthes to less than 5% by 2015. The study was conducted to assess the current prevalence and intensity of schistosomal infection among schoolchildren in ru-ral areas of the Taiz governorate after 6 years of running National Control Programme. Methods: Grade 3 schoolchildren from Shara’b Al-Raona district of Taiz Governorate were ex-amined for infections with Schistosoma mansoni using Modified Kato–Katz method and S. haematobium applying filtration method in 1998/1999, comparing the prevalence and intensity of infection with base line study, which was done 6 years ago. Results: The S. mansoni prevalence in the study population was 31%, while the prevalence of S. haematobium was 18.6%. This result considerably is similar to the prevalence of base line study. The intensity of mild, moderate and severe infection for S. mansoni reached to 15.9%, 60.6% & 23.5% re-spectively. The severity of S. haematobium infection was 68.4%. It was exceptionally found that the prevalence of S. haematobium is increased. Conclusion: The high prevalence of schistosomiasis and low effectiveness of control programme against schistosomal infection in the study area demands consideration of alternative treatment ap-proaches.
WHO: Report of the WHO expert committee on prevention and control of schistosomiasis and soil- transmitted helminthiasis. Geneva, World Health Organization; 2002:1-45.
Arfaa F. Schistosomiasis control YAR. As-signment Report WHO 1990 EM/SCHIS/90, /YES/ PDP/001
Sallam JA, Wright SG. Schistosomiasis mansoni in Yemen: A review. Ann Saudi Med.1992; 12(3): 294-296.
Arfaa F. Studies on schistosomiasis in the Yemen Arab Republic. Am J Trop Med Hyg. 1972; 21(4):421-4.
Schaap HB, Dulk MO, Polderman AM. Schistosomiasis in the Yemen Arab Republic. Prevalence of S. mansoni and S. haematobium in-fection among schoolchildren in the central highlands and their relation to altitude. Trop Geogr Med.1992; 44(1-2): 19-22
Raja'a YA, Assirgi HM, Abu-Luhom AA, Mohammed AB, Albahr MH, Ashaddadi MA, Al Muflihi AN. Schistosomes infection rate in relation to environmental factors in school children. Saudi Med J. 2000; 21(7) :635- 638.
Azazy AA, Al-Dullaimi SS. Prevalence of in-testinal parasites in pupils of an elementary school in Haja town, Yemen. Yem Med J. 1999; 3: 66-68.
Hazza YA, Arfaa F, Haggar M. Studies on schistosomiasis in Taiz province, Yemen Arab Republic. Am J Trop Med Hyg. 1983; 32(5):1023–1028.
Nagi MAM. The present status of schistosomiasis and intestinal helminthes in Yemen. In: Report on the regional workshop on the integrated control of soil-transmitted helminths and schistosomiasis, Cairo, Egypt 16–18 October 2000. Cairo, World Health Organization Regional Office for the Eastern Mediterranean, 2000 (WHOEM/ CTD/017/E/L).
Kuntz R, Malakatis G, Lawless D, Strome C. Medical Mission to the Yemen, Southwest Arabia, 1951: II. A cursory survey of the intes-tinal protozoa and helminths parasites in the people of the Yemen. The Am J Trop Med Hyg .1953; 2:13-14.
Al-Shamiri AH, Al-Taj MA, Ahmed AS. Prevalence and co-infections of schistosomia-sis/hepatitis B and C viruses among school children in endemic areas in Taiz, Yemen. Asian Pac J Trop Med. 2011; 4 (5) :404-408.
Kopeck K, Giboda M, Aldov E, Dobahi SS, and Radkovsk J. Pilot studies on the occur-rence of some infectious diseases in two dif-ferent areas in South Yemen (Aden) Part I. Parasitology. J Hyg Epidemiol Microbiol Immunol.1992;36(3):253-256.
Janitschke K, Telher AA, Wachsmuth J, Jahia S. Prevalence and control of Schistosoma haematobium infections in the Amran subprovince of the Yemen Arab Republic. Trop Med Parasitol. 1989 Jun; 40(2):181-4.
Raja'a YA, Sulaiman SM, Mubarak JS, El-Bakri MM, Al-Adimi WH, El-Nabihi MT, El-Dhobri MA, Raja'a JA. Some aspects in the control of schistosomiasis and soil-transmitted helminthiases in Yemeni children. Saudi Med J. 2001; 22(5):428-32.
Raja'a YA, Mubarak JS. Intestinal parasitosis and nutritional status in schoolchildren of Sahar district, Yemen. East Mediterr Health J. 2006; 12 Suppl 2:S189-94.
Nagi MA. Evaluation of a programme for control of Schistosoma haematobium infection in Yemen. East Mediterr Health J. 2005 Sep-Nov; 11 (5-6): 977-981.
Giboda M, Loudov J, Shonov O, Bouckov ،E, Hor cek J, Numrich P, Ruppel A, Vtovec J, Lukes S, Noll P. Efficacy of praziquantel treatment of schistosomiasis in a non-endemic country: a follow-up of parasitological, clinical and immunological parameters. J Hyg Epidemiol Microbiol Immunol. 1992; 36(4):346-55.
Gurarie D, King CH: Heterogeneous model of schistosomiasis transmission and long-term control: the combined influence of spatial var-iation and age-dependent factors on optimal allocation of drug therapy. Parasitology. 2005; 130:49-65.
Barakat R, Morshedy HE.Efficacy of two praziquantel treatments among primary school children in an area of high Schistosoma mansoni endemicity, Nile Delta, Egypt. Parasitological. 2011; 138 (4): 440-446.
Utzinger J, N’Goran EK, N’Dri A, Lengeler C, Tanner M. Efficacy of praziquantel against Schistosoma mansoni with particular considera-tion for intensity of infection. Trop Med Int Health . 2000 ; 5: 771–778.
Black CL, Steinauer ML, Mwinzi PN, Evan Secor W, Karanja DM, Colley DG. Impact of intense, longitudinal retreatment with praziquantel on cure rates of schistosomiasis mansoni in a cohort of occupationally ex-posed adults in western Kenya. Trop Med Int Health .2009; 14: 450–457.
Picquet M, Vercruysse J, Shaw DJ, Diop M, Ly A. Efficacy of praziquantel against Schistosoma mansoni in northern Senegal. Trans R Soc Trop Med Hyg. 2009;92: 90–93.
Midzi N, Sangweme D, Zinyowera S, Mapingure MP, Brouwer KC, et al..Efficacy and side effects of praziquantel treatment against Schistosoma haematobi m infection among primary school children in Zimbabwe. Trans R Soc Trop Med Hyg.2008; 102: 759–766.
Mduluza T, Ndhlovu PD, Madziwa TM, Midzi N, Zinyama R, Turner CM, Chandiwana SK, Nyazema N, Hagan P. The impact of repeated treatment with praziquantel of schistosomiasis in children un-der six years of age living in an endemic area for Schistosoma haematobium infection. Mem Inst Oswaldo Cruz. 2001; 96 Suppl: 157–164.
N’Goran EK, Gnaka HN, Tanner M, Utzinger J.Efficacy and side-effects of two praziquantel treatments against Schistosoma haematobium infection, among schoolchildren from Cote d’Ivoire. Ann Trop Med Parasitol. 2003; 97: 37–51.
Clements AC, Bosque-Oliva E, Sacko M, Landoure A, Dembele R, Traore M, Coulibaly G, Gabrielli AF Fenwick A, Brooker S. A comparative study of the spatial distribution of schistosomiasis in Mali in 1984–1989 and 2004–2006. PLoS Negl Trop Dis .2009; 3: e431.
Landoure A, t Dembe´le´R, Goita S , et al. Sig-nificantly Reduced Intensity of Infection but Persistent Prevalence of Schistosomiasis in a Highly Endemic Region in Mali after Repeat-ed Treatment PLoS Negl Trop Dis. 2012 Ju-ly; 6(7):
Poggensee G, Krantz I, Per Nordin, Sabina Mtweved S, Ahlberg B, Mosha G, Freudenthal S. A six-year follow-up of school-children for urinary and intestinal schistosomiasis and soil-transmitted hel-minthiases in Northern Tanzania Acta Trop. 2005; 9:131–140.
Hussein MH, Talat M, El-Sayed MK, ElBadawi A and Evans DB. Who misses out on school health programmes? A study of schistosomiasis control in Egypt. Transe R Soc Trop Med Hyg .1996; 90: 362-36.
Magnussen P, Muchiri E, Mungai P, Ndzovu M, Ouma J, Tosha S. A school-based ap-proach to control of urinary schistosomiasis and intestinal helminth infections in children in Matuga, Kenya: impact of a two-year chemotherapy programme on prevalence and intensity of infections. Trop Med Int Health. 1997;Sep 2(9):825–31.
Olsen A. The proportion of helminth infec-tions in a community in western Kenya which would be treated by mass chemotherapy of school children. Trans R Soc of Trop Med Hyg. 1998;Mar-Apr, 92(2):144–8.
Mohamed-Ali Q, Doehring- Schwerdtfeger E, Abdel-Rahim IM, Schlake J, Kardorff R, Franke D, Kaiser C, Elsheikh M, Abdalla M, Schafer P, et al. Ultrasonographical investiga-tion of periportal fibrosis in children with Schistosoma mansoni infection: reversibility of morbidity seven months after treatment with praziquantel. Am J Trop Med Hyg. 1991 ; 44(4):444-51.
Salah MA. Ultrasonography of urinary tract le-sion caused by bilharziasis in Yemeni patient. BJU Int. 2000; 86 (7): 790-793.
Ketabchi AA, Moshtaghi GR, Kashanian. Urinary schistosomiasis with simultaneous bladder squamous cell carcinoma and transi-tional cell carcinoma. Iranian J Parasitol. 2012; 7(3):96-98.
Seydou T, Yaobi Z, Elisa BO, et al. Two-year impact of single praziquantel treatment on in-fection in the national control programme on schistosomiasis in Burkina Faso. Bull World Health Organ.2008; 86(10):780.
Sow S, De Vlas SJ, Mbaye A, Polman K, Gryseels B. Low awareness of intestinal schistosomiasis in northern Senegal after 7 years of health education as part of intense control and research activities. Trop Med Int Health .2003; 8:744-749.