👉 Prepubescence is a term used in medical and psychological terminology to describe a period of time following birth when a baby's body has not yet developed enough for it to start functioning normally. It can last from several weeks to up to two years, during which time the child may be more vulnerable to infections and developmental issues. Prepubescence is often associated with certain health conditions such as preterm birth, low birth weight, or certain types of infections that affect the baby's immune system.