Peter Salk, the son of polio vaccine’s developer, says the newest US polio case sounds a warning

After a man in Rockland County, New York, became the first patient to contract polio in the United States in nearly a decade, experts such as Dr. Peter Salk—whose late father, Jonas, developed a vaccine for the disease—said the public shouldn't be alarmed but warned that children unvaccinated for polio could be at risk.
After a man in Rockland County, New York, became the first patient to contract polio in the United States in nearly a decade, experts such as Dr. Peter Salk—whose late father, Jonas, developed a vaccine for the disease—said the public shouldn’t be alarmed but warned that children unvaccinated for polio could be at risk.