my wife blood group is B negative, she had given an injection after birth of second child, i did not know injection name, but sister say this injection is given to B negative women after delivery for next pregnancy, now can someone anwer , Is it safe to get covid 19 vaccine ?? and no harm t my wife after covid 19 vaccine due to injection given after delivery ???

A. Researchers say a COVID-19 vaccine given to someone who’s breastfeeding can produce antibodies in breast milk within weeks. They say the antibodies can help provide protection for infants against the disease. They add that a clinical trial indicated there are few side effects from the vaccine to mothers or infants. Vaccinated women who breastfeed can pass COVID-19 protection to their babies.