“…They find that the female friends of women who received the conditional cash transfers were more likely to take up the vaccine. In addition to the work on vaccine behavior, there is a growing number of related studies of within-family spillovers of health shocks at di↵erent ages (e.g., at birth, (Daysal et al, 2020;Black et al, 2020;Breining, 2014); early childhood, (Alsan, 2017); middle age, (Fadlon and Nielsen, 2019;Fletcher and Marksteiner, 2017); late adulthood, (Costa-Font et al, 2021)).…”