60 % of whooping cough
deaths occur < 4months of age & 80% under 1yr. The us yearly rate has gone from ~1500 to 13, 500 from '90's to 2009 with increase in preventable infant deaths to > 30/yr. This increase reflects choices by those who avoid vaccines.
Unvaccinated kids are 27x as likely to get the disease. It is sad the kid doesn't have a choice in this matter.