It is estimated that Vietnam has more than 39,000 deaf children, of whom 15,500 children aged 0-6 are deaf or hard of hearing, with little access to preschool education. Screening for congenital deafness is more important than ever.

Hearing loss is a disease that seriously affects children's lives, leading to many obstacles in life. Rehabilitation for children with hearing loss plays an important role in helping them integrate into the community and take charge of their lives in the future.

Hearing tests are the earliest and most important way to know if a child has hearing loss. However, parents and caregivers also need to supplement their knowledge to be able to recognize the signs of congenital deafness in children.

There are many causes of deafness that are either congenital or develop during childhood. However, it is not always possible to determine the cause of the condition. Sometimes tests are needed to try to find the cause of congenital deafness in a child, but in reality, the cause will only be determined in 40–50% of children with congenital deafness.

Hearing loss is one of the sensory impairments that severely affects patients. Children who are born deaf often lack confidence, have an inferiority complex, and have difficulty integrating into the community. With the development of medical science, the restoration of this hearing loss by cochlear implantation is a very important step forward.

Congenital deafness is a rare birth defect. There are many causes of congenital deafness, such as: Genetic problems, due to the mother's exposure to substances during pregnancy (such as medications, alcohol, tobacco, streptomycin poisoning...) that can damage the fetus's auditory nerve, or due to the newborn's head being damaged due to a difficult birth process, causing congenital deafness.