Vaccines
IABLE

Vaccines

Vaccines come in two general types: live-attenuated strains of the organism and inactivated vaccines that contain the antigens of the target organism or more recently, the organism’s RNA. Live-attenuated vaccines given to the mother could conceivably infect the infant, but most do not pass into milk or harm the infant. Two exceptions are yellow fever and smallpox vaccines, which can infect infants and should be avoided in nursing mothers.

Some inactivated vaccines are made using recombinant gene technology while others consist of denatured disease organisms. Influenza vaccine is a common inactivated vaccine. There is no evidence or reason to believe inactivated or recombinant vaccines given to the mother would harm a nursing infant. No inactivated vaccine is contraindicated during breastfeeding.

Vaccines against SARS-CoV-2 (COVID-19) are all non-live vaccines. Studies show that little to no COVID-19 vaccine components reach the breastmilk and do no harm to the breastfed infant. Substantial amounts of IgA and IgG against SARS-CoV-2 do enter the milk and appear to have some protective activity for the infant. More detailed information on COVID-19 vaccines can be found here: https://www.ncbi.nlm.nih.gov/books/NBK565969/

References

  1. Ezeanolue E, Harriman K, Hunter P, et al. Best Practices Guidance of the Advisory Committee on Immunization Practices (ACIP). https://www​.cdc.gov/vaccines​/hcp/acip-recs​/general-recs/index.html Accessed June 5, 2020.
  2. 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.

References

  1. Ezeanolue E, Harriman K, Hunter P, et al. Best Practices Guidance of the Advisory Committee on Immunization Practices (ACIP). https://www​.cdc.gov/vaccines​/hcp/acip-recs​/general-recs/index.html Accessed December 19, 2021
  2. 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.