Maternal measles antibodies and their influence on all-cause mortality following measles vaccination: an alternative to measure very low maternal antibody levels.

It was previously shown by hemagglutination inhibition that measles vaccination in the presence of maternal measles antibodies was associated with reduced all-cause mortality. We confirmed this serological association using a multiplexed immunoassay as a sensitive alternative and estimated a threshold concentration (28.7 mIU/mL) that correlates with lower allcause mortality (P=.02).