VE Estimates and Serogroup Specific Estimates, Using the GEE and Controlling for Underlying Medical Conditions and Smoking, ABCs and MeningNet Sites, 2006 to 2013

VE (95% CI)
All Serogroups (C, Y, and W)a69% (51% to 80%)
 Serogroup C77% (57% to 88%)
 Serogroup Y51% (1% to 76%)
  • a Estimate for serogroup W could not be calculated because of low sample size.