ProPublica reports on modeling by Stanford researchers Mathew Kiang and Nathan Lo estimating that if the vaccines for polio, measles, rubella, and diphtheria vanished, over 25 years an average of 23,000 people could be paralyzed by polio, about 290,000 could die of measles, 41,000 babies could be born with congenital rubella syndrome, and 138,000 could die of diphtheria. The article ties the scenario to ProPublica's claims that Health Secretary Robert F. Kennedy Jr. is considering changes that could prompt vaccine makers to stop selling shots for American children.