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Table 2 Northern state projected type 2 immunity

From: Analysis of vaccination campaign effectiveness and population immunity to support and sustain polio elimination in Nigeria

Province Beforea Plannedb bOPVb tOPVb
Bauchi 0.57 (0.50–0.63) 0.74 (0.68–0.80) 0.64 (0.58–0.70) 0.81 (0.75–0.86)
Borno 0.37 (0.31–0.43) 0.38 (0.33–0.44) 0.34 (0.29–0.40) 0.41 (0.36–0.46)
Jigawa 0.84 (0.79–0.87) 0.93 (0.91–0.95) 0.87 (0.83–0.89) 0.96 (0.95–0.97)
Kaduna 0.60 (0.54–0.67) 0.77 (0.69–0.83) 0.67 (0.60–0.74) 0.82 (0.76–0.88)
Kano 0.83 (0.77–0.87) 0.92 (0.89–0.94) 0.85 (0.82–0.88) 0.95 (0.93–0.96)
Katsina 0.83 (0.79–0.86) 0.93 (0.91–0.94) 0.86 (0.83–0.88) 0.96 (0.94–0.96)
Kebbi 0.73 (0.68–0.78) 0.88 (0.84–0.91) 0.80 (0.75–0.83) 0.92 (0.89–0.95)
Niger 0.74 (0.68–0.79) 0.87 (0.82–0.91) 0.79 (0.73–0.83) 0.91 (0.86–0.94)
Sokoto 0.77 (0.73–0.81) 0.90 (0.87–0.92) 0.82 (0.79–0.85) 0.94 (0.92–0.95)
Yobe 0.62 (0.55–0.70) 0.73 (0.67–0.79) 0.65 (0.59–0.71) 0.78 (0.73–0.83)
Zamfara 0.78 (0.72–0.83) 0.91 (0.88–0.93) 0.83 (0.79–0.86) 0.94 (0.92–0.96)
  1. The projected mean population immunity following application of three separate campaign calendars is compared to the estimated population immunity in June 2015. 95 % credible interval in parentheses
  2. a Population immunity as of June 20th, 2015
  3. b Population immunity as of April 10th, 2016
  4. b, bivalent; OPV, Oral polio vaccine; t, trivalent