Table 6. Age-specific influenza vaccination coverage and relative rates of coverage in enrollees with and without immunosuppressive conditions in MarketScan database, United States, July 2012–-August 2017.
| Age, y* | Vaccine coverage, % |
Relative rate of vaccination, immunosuppressed versus nonimmunosuppressed, % (95% CI) | |
|---|---|---|---|
| Immunosuppressed | Nonimmunosuppressed | ||
| >1–8 | 60.1 | 58.3 | 1.24 (1.23–1.25) |
| 9–17 | 47.2 | 40.5 | 1.30 (1.29–1.30) |
| 18–49 | 20.9 | 14.7 | 1.72 (1.71–1.73) |
| 50–64 | 28.9 | 23.9 | 1.47 (1.46–1.48) |
| >65 | 30.3 | 27.9 | 1.27 (1.26–1.28) |
*MarketScan vaccination data probably underestimate true influenza vaccine coverage in the population particularly for persons >65 years of age because not all vaccinations are billed to insurance companies (24). Relative rates of vaccination between immunosuppressed and nonimmunosuppressed should not be affected.