%0 Journal Article %T 1723. Mumps Attack Rates Following Administration of a Third Dose of MMR Vaccine to School-Aged Children, Arkansas, 2016¨C2017 %J Archive of "Open Forum Infectious Diseases". %D 2018 %R 10.1093/ofid/ofy209.129 %X During the 2016¨C2017 school year, the largest mumps outbreak in the United States since 2006 occurred in Arkansas with nearly 3,000 cases. As part of outbreak response, a third dose of measles¨Cmumps¨Crubella vaccine (MMR3) was offered at 27 schools with mumps attack rates ¡Ý5 cases/1,000 students. We compared attack rates after vaccination clinics among students who received MMR3 and students with 2 MMR vaccine doses %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6252430/