Babies are born without white blood cells. Antibodies are made in white blood cells. Vaccines are useless until a baby can make the antibodies to fight these pathogens. So, tell me then, why are we vaccinating babies before they have white blood cells? In Japan, with higher population densities than in the US, babies are restricted from receiving vaccines until they are 2 years old. A baby’s natural immunities come from it’s mother. Through breast feeding, a baby receives everything it needs to survive. Jimmy Kimmel is a comedian, not a scientist. Perhaps it was satire?