There are many: If you live in the washington state, i beleive they do hearing screening test in the hospital your baby was born. You should check to see if your baby passed the screening test. There are a few hereditary conditions that affect hearing, then viral infection during the pregnancy may affect baby's hearing, then medications given to the baby may affect hearing. Meningitis may affect hearing.
Answered 8/5/2013
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Causes of prelingual: hearing loss: : (1) > 50% genetic, 50% of these from mutations of GJB2 genes that code for connexin proteins, carried by 1:33 people. Babies who inherit it from both parents have deafness. (2) syndromes, inherited or new mutations (3) intrauterine infections, mainly cytomegalovirus (3) postnatal infections, mainly bacterial meningitis. http://www.ncbi.nlm.nih.gov/books/NBK1434/?report=reader.
Answered 4/12/2015
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