2023
Fan Y, Li J, Wong JYH, Fong DYT, Wang KMP, Lok KYW. Text messaging interventions for breastfeeding outcomes: A systematic review and meta-analysis. Int J Nurs Stud. 2024 Feb;150:104647. doi: 10.1016/j.ijnurstu.2023.104647. Epub 2023 Nov 23. PMID: 38056353.
Background
- HKU researchers analyzed breast milk samples from 49 breastfeeding mothers who received 2 doses of BNT162b2 vaccine in 2021.
- The samples were collected at 4 time points: before vaccination, 1 week after the 1st dose, one week after the 2nd dose, and 1 month after the 2nd dose.
Key Findings
- No significant reduction in probiotic species like Bifidobacterium after the vaccination
- Specific breastmilk microbiota markers associated with high levels of IgA in milk
In other words,
- Antibodies produced by BNT162b2 vaccine can be passed to babies via breast milk.
- The BNT162b2 vaccine doesn't reduce beneficial microbiota in breast milk, offering protection for both mothers and babies.
Zhao S, Lok KYW, Sin ZY, Peng Y, Fan HSL, Nagesh N, Choi MSL, Kwok JYY, Choi EPH, Zhang X, Wai HK, Tsang LCH, Cheng SSM, Wong MKL, Zhu J, Mok CKP, Ng SC, Chan FKL, Peiris M, Poon LLM, Tun HM. COVID-19 mRNA vaccine-mediated antibodies in human breast milk and their association with breast milk microbiota composition. NPJ Vaccines. 2023 Oct 5;8(1):151. doi: 10.1038/s41541-023-00745-4. PMID: 37798293; PMCID: PMC10556030.
Fan HSL, Fong DYT, Lok KYW, Tarrant M. Experiences of expressed human milk feeding: A qualitative study. Sex Reprod Healthc. 2023 Dec;38:100903. doi: 10.1016/j.srhc.2023.100903. Epub 2023 Aug 23. PMID: 37657300.
Liao Q, Yuan J, Lok KYW, Ngu SF, Chen Y, Lam WWT. Learning from mothers' success in breastfeeding maintenance: coping strategies and cues to action. Front Psychol. 2023 May 16;14:1167272. doi: 10.3389/fpsyg.2023.1167272. PMID: 37260966; PMCID: PMC10229069.
Fan HSL, Ho MY, Ko RWT, Kwok JYY, Chau PH, Wong JYH, Wang MP, Lok KYW. Feasibility and effectiveness of WhatsApp online group on breastfeeding by peer counsellors: a single-blinded, open-label pilot randomized controlled study. Int Breastfeed J. 2022 Dec 22;17(1):91. doi: 10.1186/s13006-022-00535-z. PMID: 36544208; PMCID: PMC9771777.