Background Document for “Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices—United States, 2018-19 Influenza Season”

Introduction

This document contains background material relevant to “Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices—United States, 2018-19 Influenza Season” (MMWR Recomm Rep 2018;67[No.RR-3]). . The above-referenced document contains the CDC/ACIP recommendations for use of influenza vaccines in various populations for the 2018-19 season, methods for the development of recommendations, discussion of vaccines expected to be available, contraindications and precautions to vaccination, and relevant figures and tables. This document contains additional background references concerning these topics. An appendix provides details of a systematic review of live attenuated influenza vaccine (LAIV) effectiveness, which was presented to the Advisory Committee on Immunization Practices (ACIP) on February 21, 2018.