Research into the 2019 epidemic traced its history and showed it was young infants who were most at risk, followed by teenagers and adults under the age of 30. Analysis by the Immunisation Advisory Centre found that a generation born between 1982 and 2007 had low immunization rates, and vaccination records are incomplete for that period as the National Immunisation Register was introduced in 2005. Research also suggested management strategies such as a national campaign targeting the at-risk age groups; establishment of systems to ensure adequate supplies of vaccines; provision of support for their delivery at the practice level; and creative use of community facilities to improve accessibility.
