RT Journal
A1 Kuehn BM
T1 Acip: Give pertussis vaccine during every pregnancy
JF JAMA
JO JAMA
YR 2012
FD November 21
VO 308
IS 19
SP 1960
OP 1960
DO 10.1001/jama.2012.54092
UL http://dx.doi.org/10.1001/jama.2012.54092
AB 
Previously, the ACIP recommended Tdap vaccination only for pregnant women who had not previously received the vaccine. Vaccinating during each pregnancy offers an advantage in that maternal pertussis antibodies may be transferred to the fetus, potentially providing some protection for the newborn against pertussis until the infant is old enough to receive a first dose of the diphtheria, tetanus, and pertussis (DTaP) vaccine at 2 months of age. The ACIP recommends that children receive 5 doses of DTaP by age 4 years; Tdap is typically used for older age groups. Vaccination during pregnancy may also prevent mothers from being infected around the time of delivery, which may decrease the chance of pertussis being transmitted from mother to newborn.