Iowa code vaccination requirements have changed for the 2017-2018 school year, and all future school years. All students entering into 7th grade and born after September 15, 2004 will need proof of one dose of meningococcal conjugate vaccine (MenACWY). All students entering into 12th grade and born after September 15, 1999 will need proof of two doses of meningococcal (A,C,W,Y) vaccine; or 1 dose if received when the student was 16 years of age or older. Also need the T-Dap booster. Students must fulfill the vaccination requirement to attend school.