What is Newborn Screening & its importance?

"Newborn screening is screening of all newborns which may not be obvious looking at the babies. So screening has been done in most countries for the last 50 years. The reason is all reasons are examined physically. Sometimes biochemically and enzymatically babies may or may not be normal or something may not be distinguished by just a physical examination. That is called screening. So screening will help in detecting babies with biochemical or cardiovascular or enzymatic deficiencies which may not be obvious clinically"