👉 Pregenerosity, also known as postnatal immunity or maternal immunity, is a concept in immunology that refers to the protective immune response of an organism when it has not yet developed its own immune system. This means that it is only triggered when the mother is pregnant and then becomes active during pregnancy. The term "pregenerosity" comes from the Greek word "pregenos" which means "birth," referring to the fact that pregenerosity is a response to the presence of a new
