BMC Public Health 2009, 9:269 http://www.biomedcentral.com/1471-2458/9/269 Competing interests The authors declare that they have no competing interests. Authors' contributions JK conceived of the study, participated in the study design and implementation, and drafting of the manuscript. PC carried out all serological assays. PT provided guidance on quality assurance and overall supervision of the study. PB participated in the study design and performed statistical analysis. All authors read and approved the manuscript. Additional material Additional file 1 Statistical analysis of various demographic and socio-economic factors associated with rubella seropositivity. The data provided represent the statistical analysis of the numerous potential factors that were tested to determine statistical significance in association with rubella seropositivity. Click here for file [http://www.biomedcentral.com/content/supplementary/1471- 2458-9-269-S1.pdf] Acknowledgements We would like to acknowledge the special contribution made by the fol- lowing persons: Dr. Rebecca Martin and Dr. Mark Grabowsky. We would also like to acknowledge all the schools that participated in the study and the DHMT Uasin Gishu. This study was supported by Fondazione Monte dei Paschi di Siena ("MPS") through The American National Red Cross. References 1. Susan E, Robertson , David AF, Gacic-Dobo Marta, Hersh Bradley S: Rubella and Congenital Rubella Syndrome: World Health Organization, Department of Vaccines and Biologicals, Geneva, Switzerland Global update. Rev Panam Salud Publica Washington 2003, 14(5):. 2. Lee JY, Bowden DS: Rubella virus replication and links to tera- togenicity. Clinical Microbiology Reviews 2000, 13:517-587. 3. Givens KT, Lee DA, Jones T, Ilstrup DM: Congenital rubella syn- drome: ophthalmic manifestations and associated systemic disorders. Br J Ophthalmol 1993, 77:358-363. 4. Cutts FT, Robertson SE, Diaz-Ortega JL, Samuel R: Control of rubella and congenital rubella syndrome (CRS) in developing countries, part 1: burden of disease from CRS. Bulletin of World Health Organization 1997, 75:55-68. 5. Sequira E, Lakhan S, Tukei P, Kaptich D: Rubella immunity in preg- nant women in Nairobi, Kenya. J Obst Gyn East Cen Afric 1982, 1:93-95. 6. WHO: WHO position paper on rubella vaccines. Wkly Epide- miol Rep 2000, 75:161-72. 7. Pechan C: Congenital rubella in the United Kingdom before 1970: the preventive era. Rev Infect Dis 1985, 7:S11-6. 8. Soleimanjahi H, Mamdad T, Fotouhi F, Roustai MH, Faghihzadeh S: Prevalence of HI antibody titer against rubella virus to deter- mine effect of mass vaccination in Tehra. J Clin Virol 2005, 34:153-154. 9. WHO: Using lot quality-assurance sampling and area sam- pling to identify priority areas for trachoma control. Viet Nam 2005, 83(10):. 10. Ki Moran, Choi Bo Youl, Kim Myoung-Hee, shin Young-Jeon, Park Taesung: Rubella seroprevalence in Korean children. J Korean Med Sci 2003, 18:331-6. 11. Ramamurty N, Marugan S, Raja D, Elango V, Mohana , Dhanagaran D: Serosurvey of rubella in five blocks of Tamil Nadu. Indian J Med Res 2006, 123:51-4. 12. Nardone A, Tischer A, Andrews N: Comparison of rubella seroepidemiology in 17 countries: progress towards interna- tional disease control targets. Bull World Organ 2008, 86(2):118-25. 13. Majlessi F, Batebi A, Shariat M, Rahimi A, Azad TM: Rubella serol- ogy in pregnant women attending health centres of Tehran university of Medical Science east mediterr. Health J 2008, 14(3):590-4. 14. Barreto J, Sacramento I, Robertson SE, Langa J, de Gourville E, Wolf- son L, Schoub BD: Antenatal rubella serosurvey in Maputo, Mozambique. Trop Med Int Health 2006, 11:559-64. 15. Zgorniak-Nowosielska I, Zawilinska B, Szostek S: Rubella infection during pregnancy in the 1985–86 epidermic: follow-up after seven years. Euro J of Epid 1996, 12:303-308. Pre-publication history The pre-publication history for this paper can be accessed here: http://www.biomedcentral.com/1471-2458/9/269/pre pub Publish with Bio Med Central and every scientist can read your work free of charge "BioMed Central will be the most significant development for disseminating the results of biomedical research in our lifetime." Sir Paul Nurse, Cancer Research UK Your research papers will be: available free of charge to the entire biomedical community peer reviewed and published immediately upon acceptance cited in PubMed and archived on PubMed Central yours — you keep the copyright Submit your manuscript here: http://www.biomedcentral.com/info/publishing_adv.asp BioMedcentral Page 5 of 5 (page number not for citation purposes)