“In 2014, we can expect some 12,000 new babies (USA) to be identified with hearing loss. Of note, an additional 4,000 to 6,000 infants and young children (up to age 3 years) who previously passed their newborn screening will develop late-onset hearing loss. Therefore, some 16,000 children will be identified with hearing loss, rendering hearing loss the most common birth defect.”
If you have concerns about your child’s hearing, do not blow them off. Early intervention is critical to brain development, specifically in regard to spoken language, reading, and cognitive skills.
http://www.audiology.org/news/Pages/20140516.aspx via Flexer and Madell (2014), posted by the American Academy of Audiology