We exploit the introduction of sulfa drugs in 1937 to identify the impact of exposure to pneumonia in infancy on later … disability rates. These improvements were larger for those born in states with higher pre-intervention pneumonia mortality rates … exhibit larger absolute reductions in pneumonia mortality after the arrival of sulfa, we suggest that the absence of …

We exploit the introduction of sulfa drugs in 1937 to identify the causal impact of exposure to pneumonia in infancy on … pneumonia as these were the areas that benefited most from the availability of sulfa drugs. These estimates are, in general … our finding that African Americans experienced larger absolute reductions in pneumonia mortality after the arrival of …