title: Prevalence and co-infections of schistosomiasis/hepatitis B and C viruses among school children in an endemic areas in Taiz, Yemen.
abstract: OBJECTIVE
  To determine the disease prevalence and its relationship with hepatitis B and C viruses among school children in five endemic areas by schistosomiasis.
  
  
  METHODS
  During June 2007 and March 2009, 1 484 school children aged between 5 - 16 years participated in the current study from 32 basic schools in five districts (Al-Dhabab, Hedran, Warazan, Al-Barh and Al-Shmaytin) in Taiz Governorate, Republic of Yemen. Out of school children who participated in the study; 1 406 stool samples, 1 484 urine samples and 214 blood samples were collected and examined.
  
  
  RESULTS
  Schistosoma mansoni (S. mansoni) was found in all the studied areas except Al-Barh. However, Schistosoma haematobium (S. haematobium) was recorded only in Al-Shmaytin and Al-Barh. Both S. mansoni and S. haematobium were observed in Al-Shmaytin district. The overall prevalence was 20.76% for S. mansoni and 7.41% for S. haematobium. The prevalence rate of infection among males was higher than females, showing no significant differences. Rate of light, moderate and heavy infections in the case of S. mansoni were 41.78%, 25.34% and 32.87% respectively. Whereas, for S. hematobium it was 50.90% for light infection and 49.09% for heavy infection. Regarding to the prevalence of viral hepatitis among infected school children with schistosomiasis, it could be noticed that hepatitis B virus was higher than the prevalence of hepatitis C virus. But, the presence of HBsAg and anti-HCV was not associated with Schistosoma infection.
  
  
  CONCLUSIONS
  Schistosomiasis infection is an important public health problem in Taiz Governorate, Republic of Yemen. There was a correlation between S. haematobium and hepatitis B, but no association between S. mansoni infections and hepatitis B and C viruses.
authors.affiliation: Department of Microbiology, Faculty of Applied Science, Taiz University, Yemen. adamalshamiri2010@yahoo.com
authors.forename: Adam H
authors.initials: AH
authors.lastname: Al-Shamiri
authors.forename: Mohammed A
authors.initials: MA
authors.lastname: Al-Taj
authors.forename: Ameera S
authors.initials: AS
authors.lastname: Ahmed
mesh_terms: D000293:Adolescent; D002648:Child; D060085:Coinfection / Q000453:epidemiology*; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology*; D006526:Hepatitis C / Q000453:epidemiology*; D006801:Humans; D008297:Male; D015995:Prevalence; D012552:Schistosomiasis / Q000453:epidemiology*; D015006:Yemen / Q000453:epidemiology