Vaccine stockpile mostly unused in mumps drive.
Health officials aren't sure why so few college-age Iowans took advantage of
Vaccines, like any other product sold in a free enterprise system, should be subject to the law of supply and demand. If Iowans choose to roll up their sleeves and get another dose of mumps vaccine, that is their right. If Iowans say "no thankyou" to mumps vaccine - for whatever reason - that is their right.