Officials: Whooping cough on the rise in DuPage Co.

DuPage County health officials say cases of whooping cough have increased in recent weeks.

Most of the cases have been in children and adolescents, officials say.

Whooping cough is also called pertussis. Symptoms include a cough with a distinctive whooping sound. It is highly infectious and is spread by coughing and sneezing.

The illness is treated with antibiotics.