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. Author manuscript; available in PMC: 2018 Jul 13.
Published in final edited form as: Vaccine. 2017 Jun 9;35(32):3974–3981. doi: 10.1016/j.vaccine.2017.05.093

Fig. 1.

Fig. 1

a. Attack rate curves by location: no choice.

b. Attack rate curves by location: adult choice.

c. Attack rate curves by location: pediatric choice.

d. Attack rate curves by location: choice for both age groups.