What is immunity proveded by antibodies being passed through the placenta or mother's milk?

Immunity provided by antibodies passed through the placenta or mother's milk is known as passive immunity. During pregnancy, maternal antibodies are transferred to the fetus via the placenta, offering the newborn protection against infections in the early months of life. Additionally, breast milk, particularly colostrum, contains antibodies and other immune factors that help bolster the infant's immune system and protect against pathogens. This type of immunity is temporary, as the infant's immune system gradually develops its own responses.