Table 2. Summary of neutralization titers of contemporary sera from subjects with or without a history of having received the NJ/76 swine influenza vaccine.

	No NJ/76 Vaccination		NJ/76 Vaccination
Neutralization to	GMT (95% CI)	Percentage (titer >160)	GMT (95% CI)	Percentage (titer >160)
NJ/76	44 (26 – 74)	21	181 (121 – 270)	52
Mex/4108/09	305 (187 – 497)	68	331 (215 – 511)	83

NJ/76: A/New Jersey/1976; Mex/4108/09: A/Mexico/4108/2009.