Table 3.
Estimated Average Annual Incidence of Invasive H. influenzae Disease among Children Aged <5 years, by Serotype and Race — United States, 2008–2017
| White | Black | Asian/PI | AI/AN | Total | |||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Incidencea | IRR | Incidencea | IRR (95% CI) |
Incidencea | IRR (95% CI) |
Incidencea | IRR (95% CI) |
Incidencea | |
| NTHi | 1.6 | Ref | 2.4 | 1.5 (1.2–1.9) |
1.4 | 0.9 (0.6–1.4) |
2.0 | 1.2 (0.7–2.3) |
1.7 |
| Hia | 0.5 | Ref | 0.6 | 1.3 (0.9–1.9) |
0.1 | 0.1 (0.0–0.8) |
8.4 | 16.7 (11.7–24.0) |
0.7 |
| Hib | 0.1 | Ref | 0.1 | 0.4 (0.1–1.3) |
0.0 | N/A | 2.9 | 22.4 (11.9–42.1) |
0.2 |
| Hie | 0.1 | Ref | 0.1 | 2.8 (1.0–7.1) |
0.1 | 1.2 (0.1–8.9) |
0.0 | N/A | 0.1 |
| Hif | 0.3 | Ref | 0.9 | 2.8 (1.9–4.2) |
0.5 | 1.7 (0.9–3.5) |
0.6 | 1.9 (0.6–5.7) |
0.4 |
| Total | 2.6 | Ref | 4.1 | 1.6 (1.4–1.9) |
2.0 | 0.8 (0.6–1.1) |
13.8 | 5.3 (4.2–6.8) |
3.0 |
Note: No cases of invasive disease due to H. influenzae serotypes c or d were reported among children aged <5 years.
a
Cases per 100,000 persons per year
Abbreviations: PI, Pacific Islander; AI/AN, American Indian and Alaska Native; IRR, Incidence Rate Ratio; CI, confidence interval; Ref, Reference category for IRR calculation; NTHi, nontypeable H. influenzae; Hia, H. influenzae serotype a; Hib, H. influenzae serotype b; Hie, H. influenzae serotype e; Hif, H. influenzae serotype f