`` Very few ships ... received a failing score over the last couple of years , '' CDC official says . The CDC's report also found that only one in five children who were vaccinated had been fully immunized against measles by age 12 months. An 85 or lower on the CDC 's 100-point inspection scale is considered failing . It 's the second time in as many months that Holland America ships have been targeted by officials . The cruise line says `` the unsatisfactory score is highly unusual and an aberration ''
`` Very few ships ... received a failing score over the last couple of years , '' CDC official says . The CDC's report also found that only one in five children who were vaccinated had been fully immunized against measles by age 12 months. An 85 or lower on the CDC 's 100-point inspection scale is considered failing . The cruise line says `` the unsatisfactory score is highly unusual and an aberration ''