Evaluation of Adverse Effects in Nursing Mothers and Their Infants After COVID-19 mRNA Vaccination.
Breastfeed Med
; 17(5): 412-421, 2022 05.
Article
in English
| MEDLINE | ID: covidwho-1735499
ABSTRACT
Background and Objectives:
Breastfeeding women are generally excluded from clinical trials with new vaccines. The objective of the study was to explore whether the BNT162b2 mRNA and mRNA-1273 COVID-19 vaccines are safe for breastfeeding mothers and their breastfed infants.Methods:
A convenience sample prospective cohort single institution study was performed on breastfeeding health care professionals, who were exposed to second dose of SARS-CoV2 vaccine at the beginning of the study period. They and their breastfed children's symptoms were followed up through online questionnaires for 14 days.Results:
Of the 95 finally included participants, only 1 was lost to follow-up on day 7. Mean age of the mothers was 35.9 ± 3.9 years and that of their infants was 14.6 ± 12.1 months. At least one adverse event was reported by 85% (95% confidence interval [CI] 76-91.5%) of the mothers. The most frequent was injection site pain in 81% of cases. Moreover, 31% (95% CI 22-41%) observed some event in their breastfed children. Most frequently, 19% (95% CI 13-30%) of the children were irritable. During the 14 days of follow-up, 36% of the children (95% CI 27-46%) were diagnosed with respiratory infection.Conclusions:
Most mothers' reactions were mild and transitory, generally limited to the first 3 days after vaccination. Many children's events were associated with concomitant infectious processes and we did not detect a notable peak on any particular day of follow-up. Neither mothers nor their infants developed serious adverse events nor were they diagnosed with COVID-19 within the study period.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
COVID-19
/
BNT162 Vaccine
/
2019-nCoV Vaccine mRNA-1273
Type of study:
Cohort study
/
Experimental Studies
/
Observational study
/
Prognostic study
Topics:
Vaccines
Limits:
Adult
/
Female
/
Humans
/
Infant
Language:
English
Journal:
Breastfeed Med
Journal subject:
Nutritional Sciences
Year:
2022
Document Type:
Article
Affiliation country:
BFM.2021.0256
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