PT - JOURNAL ARTICLE AU - Jeremy N. Matlow AU - Anna Pupco AU - Pina Bozzo AU - Gideon Koren TI - Tdap vaccination during pregnancy to reduce pertussis infection in young infants DP - 2013 May 01 TA - Canadian Family Physician PG - 497--498 VI - 59 IP - 5 4099 - http://www.cfp.ca/content/59/5/497.short 4100 - http://www.cfp.ca/content/59/5/497.full SO - Can Fam Physician2013 May 01; 59 AB - Question What is the basis for the new recommendations to vaccinate pregnant women against pertussis after the first trimester? Answer There have been outbreaks of epidemic proportions of pertussis, mostly among young infants who have not received sufficient passive immunity from their mothers. This strategy of vaccination during pregnancy aims at stopping these life-threatening epidemics.