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Drugs and Lactation Database (LactMed) [Internet]. Bethesda (MD): National Library of Medicine (US); 2006-.

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Drugs and Lactation Database (LactMed) [Internet].

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Diphtheria-Tetanus-Pertussis Vaccines

Last Revision: February 15, 2021.

Estimated reading time: 4 minutes

Drug Levels and Effects

Summary of Use during Lactation

The Centers for Disease Control and Prevention and several health professional organizations state that vaccines given to a nursing mother do not affect the safety of breastfeeding for mothers or infants and that breastfeeding is not a contraindication to DTP vaccine.[1-3] Women are recommended to received Tdap with every pregnancy.[4] Those vaccinated after 20 weeks of gestation have higher antipertussis IgA levels in their breastmilk than those who were not vaccinated. Women, including nursing mothers, who have not received acellular pertussis vaccine with tetanus and reduced diphtheria toxoids (Tdap) previously should be vaccinated with Tdap immediately postpartum.[4,5] After vaccination, antipertussis antibodies appear in breastmilk within 1 to 2 weeks; however, conflicting results have been reported on whether breastfed infants are protected from pertussis.[6,7] Breastfeeding appears to reduce infant side effects associated with routine childhood immunization. Breastfed infants should be vaccinated according to the routine recommended schedules.

A study of 67 colostrum samples that underwent Holder pasteurization (62.5 degrees C for 30 minutes) found that overall IgG amounts decreased by 34 to 40%. Immunoreactivity against tetanus toxoid decreased by 8 to 20%.[8]

Drug Levels

Maternal Levels. Thirty-nine women who were within 24 hours postpartum received 0.5 mL of Tdap vaccine (Adacel, Sanofi Pasteur) and 11 received no vaccine. Colostrum or breast milk and blood samples were collected at baseline and 7, 10, 14, and 28 days after vaccination. Breastmilk IgA levels against pertussis toxoid peaked at day 10 postpartum, then slowly decreased. Breast milk antibody levels against the other antipertussis vaccine components, filamentous hemagglutinin and fimbriae types 2 and 3, reached a plateau during days 10 to 14 and then slowly decreased. Breast milk antibody levels against another antipertussis vaccine component, pertactin, peaked on day 14 and then decreased by day 28.[9]

The milk of 25 pregnant women given Tdap vaccine (Boostrix, GlaxoSmithKline) after 20 weeks of pregnancy was compared to colostrum from 12 unvaccinated women. Milk samples were collected prior to discharge after delivery (colostrum) and at 2, 4 and 8 weeks postpartum. Vaccinated women had significantly higher antipertussis antibody levels in their breastmilk than unvaccinated women. The primary class of immunoglobulins was IgA, which were highest in colostrum, but still detectable at 8 weeks.[10]

Total and anti-pertussis toxin secretory IgA (sIgA) levels were measured in breastmilk from women who had been vaccinated either during pregnancy (n = 19), at or shortly after delivery (n = 34), less than 5 years before delivery (n = 9), or more than 5 years before delivery (n = 12). Tdap vaccine (Boostrix, GlaxoSmithKline) was used in the first 3 groups. Breastmilk samples were obtained between 44 and 91 days postpartum. No difference in total sIgA was found between the groups, but women who were vaccinated during pregnancy or shortly after birth had higher anti-pertussis toxin levels of sIgA than those vaccinated more than 5 years before. Higher anti-pertussis toxin sIgA levels were found among women practicing mixed feeding than among exclusively breastfeeding mothers.[11]

Infant Levels. Relevant published information was not found as of the revision date.

Effects in Breastfed Infants

Limited data indicate that breastfeeding can enhance the response of the infant to certain vaccine antigens,[1,2,12] including tetanus toxoid.[13] Breastfed infants are also less likely to have fever and may be less likely to experience anorexia and reduced energy intake after routine childhood immunization than those who are not breastfed.[14,15]

One study of previously vaccinated infants found that at 21 to 40 months of age breastfed infants had higher IgG levels against diphtheria, higher secretory IgA levels in saliva against diphtheria and tetanus and higher fecal IgM against tetanus than formula-fed infants.[16]

A case-control study in Brazil found that exclusive breastfeeding of infants under 6 months of age protected them against pertussis-like illness. Protection was enhanced if the mother had been vaccinated against pertussis during pregnancy.[17]

Effects on Lactation and Breastmilk

Relevant published information was not found as of the revision date.


Ezeanolue E, Harriman K, Hunter P, et al. Best Practices Guidance of the Advisory Committee on Immunization Practices (ACIP). https://www​​/hcp/acip-recs​/general-recs/index.html Accessed June 5, 2020.
Kimberlin DW, Brady MT, Jackson MA, et al. Red Book: 2018 Report of the Committee on Infectious Diseases. 31st ed. Elk Grove Village, IL: American Academy of Pediatrics. 2018.
Gruslin A, Steben M, Halperin S, et al. Immunization in pregnancy: No. 220, December 2008. Int J Gynaecol Obstet. 2009;105:187–91. [PubMed: 19367691]
Anon. Updated recommendations for use of tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine (Tdap) in pregnant women--Advisory Committee on Immunization Practices (ACIP), 2012. MMWR Morb Mortal Wkly Rep. 2013;62:131–5. [PMC free article: PMC4604886] [PubMed: 23425962]
Murphy TV, Slade BA, Broder KA, et al. Prevention of pertussis, tetanus and diphtheria among pregnant and postpartum women and their infants. Recommendations of the Advisory Committee on Immunization Practices (ACIP). MMWR Recomm Rep. 2008;57(RR-4):1–51. [PubMed: 18509304]
Pandolfi E, Gesualdo F, Carloni E, et al. Does breastfeeding protect young infants from pertussis? Case-control study and immunologic evaluation. Pediatr Infect Dis J. 2017;36:e48–e53. [PubMed: 27870812]
Bellido-Blasco J, Guiral-Rodrigo S, Miguez-Santiyán A, et al. A case-control study to assess the effectiveness of pertussis vaccination during pregnancy on newborns, Valencian community, Spain, 1 March 2015 to 29 February 2016. Euro Surveill. 2017;22:30545. [PMC free article: PMC5479988] [PubMed: 28598324]
Rodríguez-Camejo C, Puyol A, Fazio L, et al. Antibody profile of colostrum and the effect of processing in human milk banks: Implications in immunoregulatory properties. J Hum Lact. 2018;34:137–47. [PubMed: 28586632]
Halperin BA, Morris A, Mackinnon-Cameron D, et al. Kinetics of the antibody response to tetanus-diphtheria-acellular pertussis vaccine in women of childbearing age and postpartum women. Clin Infect Dis. 2011;53:885–92. [PubMed: 21946190]
Abu Raya B, Srugo I, Kessel A, et al. The induction of breast milk pertussis specific antibodies following gestational tetanus-diphtheria-acellular pertussis vaccination. Vaccine. 2014;32:5632–7. [PubMed: 25148774]
De Schutter S, Maertens K, Baerts L, et al. Quantification of vaccine-induced antipertussis toxin secretory IgA antibodies in breast milk: Comparison of different vaccination strategies in women. Pediatr Infect Dis J. 2015;34:e149–52. [PubMed: 25719454]
Pabst HF. Immunomodulation by breast-feeding. Pediatr Infect Dis J. 1997;16:991–5. [PubMed: 9380478]
Perin MC, Schlindwein CF, de Moraes-Pinto MI, et al. Immune response to tetanus booster in infants aged 15 months born prematurely with very low birth weight. Vaccine. 2012;30:6521–6. [PubMed: 22959983]
Pisacane A, Continisio P, Palma O, et al. Breastfeeding and risk for fever after immunization. Pediatrics. 2010;125:e1448–52. [PubMed: 20478932]
López-Alarcón M, Garza C, Habicht JP, et al. Breastfeeding attenuates reductions in energy intake induced by a mild immunologic stimulus represented by DPTH immunization: possible roles of interleukin-1beta, tumor necrosis factor-alpha and leptin. J Nutr. 2002;132:1293–8. [PubMed: 12042449]
Hahn-Zoric M, Fulconis F, Minoli I, et al. Antibody responses to parenteral and oral vaccines are impaired by conventional and low protein formulas as compared to breast-feeding. Acta Paediatr Scand. 1990;79:1137–42. [PubMed: 2085099]
Nascimento RMD, Baptista PN, Lopes KAM, et al. Protective effect of exclusive breastfeeding and effectiveness of maternal vaccination in reducing pertussis-like illness. J Pediatr (Rio J). 2021 [PubMed: 33465336]

Substance Identification

Substance Name

Diphtheria-Tetanus-Pertussis Vaccines

Drug Class

Breast Feeding



Disclaimer: Information presented in this database is not meant as a substitute for professional judgment. You should consult your healthcare provider for breastfeeding advice related to your particular situation. The U.S. government does not warrant or assume any liability or responsibility for the accuracy or completeness of the information on this Site.


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