During the COVID-19 pandemic, research showed that lactating mothers vaccinated against SARS-CoV-2 produced antibodies (IgG1, IgA, IgM) present in breast milk, potentially providing protection against the virus to their breastfeeding infants (Quitadamo et al., 2021; Demers-Mathieu, 2023). Here, CD79A is linked to COVID-19.