The meaning of the article by Dr. Chabot in Pediatrics, June 1971 concerning improved infant mortality between 1964 and 1968 in Denver puzzled me. I wonder whether there is any relation between the improved community health programs described and the happy results presented. Surely, many factors other than medical care affect infant mortality. For example, I wonder whether the author would suggest that the startling (to me) rise in infant mortality noted in Table II for Boston, Buffalo, Phoenix, Pittsburgh and Seattle, resulted from poorer delivery of medical care.