References
- World Health Organization. Polio laboratory manual. 4th ed.; 2004 [cited 2014 Nov 13]. Available from: http://whqlibdoc.who.int/hq/2004/WHO_IVB_04.10.pdf.
- World Health Organization/Rotary International / CDC / UNICEF. Polio eradication & endgame strategic plan 2013-2018. 2013 [cited 2014 Nov 03]. Available from: http://www.polioeradication.org/Portals/0/Document/Resources/StrategyWork/PEESP_ES_EN_A4.pdf.
- Bloom BR, LambertPH. The vaccine book. Boston (MA): Academic Press; 2003.
- John TJ Vashishtha VM Eradicating poliomyelitis: India’s journey from hyperendemic to polio-free status. Indian J Med Res. 137(5):881–94.
- World Health Organization. Media centre Poliomyelitis. 2014 [cited 2015 Feb 2]. Available from: http://www.who.int/mediacntre/factsheets/fs114/en.
- Global Polio Eradication Initiative. Data and monitoring > Polio this week. 2015 [cited 2015 Jun 15]. Available from: http://polioeradication.org/Dataandmonitoring/Poliothisweek.aspx.
- South Africa. Department of Health. Polio eradication EPI-SA Fact sheet South Africa: Department of Health. Pretoria; 2004 Feb.
- WHO/UNICEF. South Africa: WHO and UNICEF estimates of immunization coverage: 2013 revision. 2014 [cited 2015 Feb 2]. Available from: http://www.who.int/immunization/monitoring_surveillance/data/zaf.pdf.
- CDC. Global Routine Vaccination Coverage — 2012. 2013 [cited 2015 Apr 30]. Available at:http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6243a4.htm.
- Schoub BD. Introduction of inactivated polio vaccine (IPV) into the routine immunization schedule of South Africa. Vaccine. 2012;30 Suppl 3:C35–7.
- Amayeza Info Services. 2013 Vaccine schedules for South Africa. 2013 [cited 2015 Feb 2]. Available from: http://www.pntonline.co.za/index.php/PNT/article/viewFile/718/1068.
- Polio Global Eradication Initiative. Routine immunization. 2010 [cited 2012 Jul 18]. Available from: http://www.polioeradication.org/Aboutus/Strategy/Routineimmunization.aspx.
- Conyn-van Spaendonck MA, de Melker HE, Abbink F, et al. Immunity to poliomyelitis in The Netherlands. Am J Epidemiol. 2001;153(3):207–14.10.1093/aje/153.3.207
- Pianetti A, Salvaggio L, Biffi W, et al. Antipoliomyelitis immunity status in a cohort of young men drafted into military service, residing in the suburban Milan area. Eur J Epidemiol. 1997;13(6):725–7.10.1023/A:1007331900645
- Pires de Miranda M, Carmo Gomes M, Rebelo de Andrade H. Seroprevalence of antibodies to poliovirus in individuals living in Portugal, 2002. Euro Surveill. 2007;12(6):E7–8.
- Kiffer CR, Conceicao OJ, Santos EB, et al. Estimated prevalence of immunity to poliomyelitis in the city of São Paulo, Brazil: a population-based survey. Braz J Infect Dis. 2002;6(5):232–43.10.1590/S1413-86702002000500004
- Grotto I, Handsher R, Gdalevich M, et al. Decline in immunity to polio among young adults. Vaccine. 2001;19(30):4162–6.10.1016/S0264-410X(01)00165-7
- Schoub BD, Blackburn NK, Mcanerney JM. Seroprevalence to polio in personnel at a virology institute. J Infect. 2001;43(2):128–31.10.1053/jinf.2001.0867
- Global Polio Eradication Initiative. Global Polio Eradication Initiative>Polio and prevention>The virus. 2010 [cited 2014 Nov 2]. Available from: http://www.polioeradication.org/Polioandprevention/Thevirus.aspx.
- CDC. Possible Eradication of Wild Poliovirus Type 3-Worlwide, 2012. 2014 [cited 2015 Feb 11]. Available from: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6345a4.htm.
- Bulletin of the World Health Organization. WHO and UNICEF estimates of national infant immunization coverage: methods and processes. 2009 [cited 2014 Oct 2]. Available from: http://www.who.int/bulletin/volumes/87/7/08-053819/en/.
- Schoub BD, McAnerney JM, Van Middelkoop A, et al. A population-based seroprevalence study in South Africa as a tool in the polio eradication initiative. Am J Trop Med Hyg. 1998;58(5):650–4.
- Giwa FJ, Olayinka AT, Ogunshola FT Seroprevalence of poliovirus antibodies amongst children in Zaria, Northern Nigeria. Vaccine. 30(48):6759–65.
- Donbraye E, Adewumi MO, Odaibo GN, et al. (2011). Evaluation of immunity against poliovirus serotypes among children in riverine areas of Delta state, Nigeria. Afr J Cln Exper Microbiol. 12(2):72–5.
- Iliyasu, Z, Nwaze E, Verma H, et al. Survey of poliovirus antibodies in Kano, Northern Nigeria. Vaccine. 32(12):1414–20.
- Santoro R, Lombardi F, Novello F, et al. Serum antibodies to poliomyelitis in Italy. Bull World Health Organ. 1984;62(4):591–5.
- Jee YM, Cheon DS, Kim KS, et al. A seroprevalence study of poliovirus antibody among primary schoolchildren in Korea. Epidemiol Infect. 1999;132(2):351–5.10.1017/S0950268803001663
- Wang, H, Cui H, et al. Seroprevalence of antipolio antibodies among children <15 years of age in border provinces in China. Clin Vaccine Immunol. 20(7):1070–5.
- CDC. Seroprevalence pf Poliovirus Antibodies Among Children in a Dominican Community—Puerto Rico, 2002. 2005 [cited 2014 Sep 9]. Available from: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5423a2.htm.