Table 6. Associations between Corynebacterium diphtheriae carriage and age group in 2 districts, Vietnam.

Age, y	Na Trang, % (95% CI)	Qung Ngi, % (95% CI)
1–5	68 (67–69)	36 (31–42)
6–10	7 (4–9)	34 (29–40)
16–25	12 (7–19)	39 (31–46)
25–36	33 (27–40)	50 (47–56)
36–55	28 (17–43)	54 (47–60)
Total	26 (20–32)	42 (39–46)