combines cross-state variation in mandated eligibility for Medicaid with two influenza pandemics — the 1957-58 "Asian Flu … heterogeneity in the underlying severity of these two shocks across counties, we find no relationship between Medicaid eligibility … and pandemic infant mortality during the 1957-58 outbreak. After Medicaid implementation, we find that better access to …

We estimate the effect of the Affordable Care Act Medicaid expansion on county-level mortality in the first four years …