The Nigerian state of Kano resumes polio vaccination after an eleven
… Shekarau advocated the use of a vaccine in late July 2004, as it was developed by a UN-approved manufacturer in Muslim Indonesia. In 2004, the number of polio cases in Nigeria increased to 430 … 6 from January - July 2010. References: BBC 'Key Dates' (2004) Focus on Africa, October to December, v. 15 no. 4, p. 8 …