List of figures
Figure 1. PRISMA flow diagram for review of prevalence data
Figure 2 Dates of publication/review (n=660)
Figure 3. Age groups given for older adults (n=141)
Figure 4. Age groups given for children (n=110)
Figure 5. Pink risk statement (a variation on the standard YOPI categories) presented to the focus group
Figure 6. Blue risk statement (extended YOPI categories defining chronic illnesses and treatments that result in reduced immune function) presented to the focus group