TABLE 3.

Duration of Protection and Reduction in Rates of Rotavirus-Coded Hospitalization Among Children Who Received at Least 1 Dose of RV5 Versus Unvaccinated Children, According to Age^a

Age (mo)b	Rotavirus-Coded Diarrhea
	Hospitalization Rate, n/10 000 PY		Rate Reduction (95% CI), %
	Vax +	Vax −
3–11	1	8	87 (85–90)
12–23	1	19	87 (84–89)
24–35	2	11	86 (83–89)
36–47	0	5	NA
48–59	1	5	81 (75–86)

NA, not applicable; PY, person-year; Vax +, vaccinated; Vax −, unvaccinated.

^aChildren who were age-eligible for the RV5 vaccine as of February 3, 2006, when RV5 was first recommended (ie, age less than the first-dose upper limit of 14 wk and 6 d when RV5 was licensed on February 3, 2006) and who were continuously enrolled in their insurance plan for at least 3 mo). Vaccination status was determined by the presence or absence of a current procedural terminology code for receipt of at least 1 dose of RV5. Children who were either from states with universal vaccination programs or had received mixed vaccine schedules with both RV1 and RV5 doses were excluded.

^bAge at hospitalization for a diarrhea-associated event.