Over 40,000 kids in America were admitted to emergency rooms between 1997 and 2010 due to swallowing tiny batteries. According to a report published by the Centers for Disease Control and Prevention (CDC), about 72% of these admitted to ERs were kids age 4 or younger. CDS also found than there were 14 deaths due to tiny batteries.
Historical data from CDC showed that only about 1,900 children treated in hospital due to swallowing tiny batteries in 1998. The number has increased to 4,800 in 2010, or an increase of over 150% for duration of twelve years.