. 2017 Sep 5;171(9):887–892. doi: 10.1001/jamapediatrics.2017.1695

Table 1. Model Variables for Measles Epidemiology, Vaccination, and Public Sector Costs.

Variable	Base Case Value	Comments
Fixed model parameters
Estimated annual cases in US children in recent years	48	28% Total cases were in ages 2-11 y
Estimated annual No. of outbreaks in US children (≥3 cases)	4
MMR efficacy for measles, %	95	Assume some with 2 doses
Cost per measles case, $	20 000
Fitted model parameters
Basic R₀, measles in children	5.7^a
No. of measles importations in US children	16^b

Abbreviations: CDC, Centers for Disease Control and Prevention; MMR, measles, mumps, and rubella; R₀, reproductive number.

^{^a}

The model accounts for transmission among children who represent approximately 30% of the cases.

^{^b}

The CDC estimates approximately 35 cases of imported measles per year, which broadly aligns with our findings because children account for approximately 30% of the cases.