00428nas a2200145   4500000000100000008004100001100001200042700001300054700001300067245009600080856007100176300001400247490000700261022001400268       2016                            d1 aGomes G1 aGordon S1 aLalloo D00aClinical trials: The mathematics of falling vaccine efficacy with rising disease incidence.  uhttp://www.sciencedirect.com/science/article/pii/S0264410X16302304  a3007-30090 v34  a1873-2518