Nigeria plans major measles and polio vaccination campaigns

... io Vaccine (OPV) would be given house to house to all eligible under-five children while the measles' vaccines and Vitamin A would be administered to children aged 6 - 59 months old at health facilities (fixed posts) and temporary fixed posts.

http://crofsblogs.typepad.com/h5n1/2013/03/nigeria-plans-major-measles-and-polio-vaccination-campaigns.html