Congenital Rubella Syndrome, also known as CRS, is a viral infection that affects unborn babies if the mother contracts rubella during pregnancy. The consequences of CRS can be severe, ranging from vision or hearing impairment to heart defects or developmental delays. The term CRS is commonly used in medical jargon, but there are also other expressions to describe this condition, such as congenital rubella infection, foetal rubella syndrome, or congenital rubella rubella virus infection syndrome. Whatever the name, it's crucial to prevent rubella transmission through vaccination, particularly among women of reproductive age, to avoid the devastating effects of CRS on infants.