Significant correlates of seasonal influenza immunization during pregnancy included healthcare provider recommendation -LSB- OR = @ , @ % CI : ( @,@ ) -RSB- , use of hospital-based practices as primary source of prenatal care -LSB- OR = @ , @ % CI : ( @,@ ) -RSB- , and perceived interpersonal support for influenza immunization -LSB- OR = @ , @ % CI : ( @,@ ) -RSB- .