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  Indian J Med Microbiol
 

Table 1: Vaccine efficacy against various end-points in per-protocol and intention to treat cohorts from phase III RCTs-Risk ratio of zero indicates 100percent efficacy, whereas one indicates no difference with controls[12]

Table 1: Vaccine efficacy against various end-points in per-protocol and intention to treat cohorts from phase III RCTs-Risk ratio of zero indicates 100percent efficacy, whereas one indicates no difference with controls<sup>[12]</sup>