13 March 2002 --For Nigeria to meet the global target of interrupting transmission of wild poliovirus by the end of this year, it has been recommended that the country conducts two rounds of Sub-National Immunization Days (SNIDs) in April and May. These will be done in the whole states of Sokoto, Kebbi, Zamfara, Kano and Jigawa as well as parts of Borno, Benue, Niger, Katsina, Kogi, Nasarawa, Kaduna and the Federal Capital Territory (FCT), which are considered as high risk areas for polio transmission.