Primary source: https://dx.doi.org/10.1097/AOG.0000000000004695 https://dx.doi.org/10.1097/AOG.0000000000004695 Couple interesting points: - the effect size i

Primary source: https://dx.doi.org/10.1097/AOG.0000000000004695 https://dx.doi.org/10.1097/AOG.0000000000004695 Couple interesting points: - the effect size is less than one day - they don’t have any data on actual SARS-CoV-2 infection - time between doses seems to be a major factor: > The increase in cycle length for both the first and second vaccine cycles appears to be driven largely by the 358 individuals who received both vaccine doses within a single cycle (cycle four) Finally, from the discussion section, they hypothesize that the effect is likely due to the stress of the immune response. Seems reasonable; would be interesting to see if there are similar studies for conventional vaccine tech