Table 1.

Reports to the Vaccine Adverse Event Reporting System (VAERS) following influenza A (H1N1) 2009 monovalent vaccine and 2009–2010 seasonal influenza vaccines among adults aged 17–44 years, United States, August 1, 2009-December 31, 2010^a.

Serious reports
Influenza vaccine administered	Total Reports	Serious reports	Age in years median	Onset interval in days median (range)	Population vaccinated N (%)	Reporting Rate per 100,000 doses administered	Reporting Rate Ratio Military to Civilian population (95% CI)
Total US population
2009-H1N1 MIV	4,107	469	33	2 (0, 257)	19,163,035 (16.8)	2.45	Ref
Seasonal:
IIV3	2,140	192	34	2 (0, 149)	31,938,392 (28.0)	0.60	Ref
LAIV3	150	12	32.5	4 (0, 178)	2,395,379 (2.1)	0.50	Ref
Total U.S. active military population
2009-H1N1 MIV	175	21	27	9 (0, 84)	1,757,801 (73.6)	1.19	0.49 (0.06, 0.92)
Seasonal:
IIV3	41	6	23.5	1.5 (0, 261)	811,406 (34.0)	0.74	1.23 (0.43, 2.03)
LAIV3	64	15	27	24 (1, 211)	1,138,209 (47.7)	1.32	2.63 (2.18, 3.09)

^aVaccinated by July 31, 2010.