By Fox News Latino | 10/29/2010 - 11:26
A serious whooping cough outbreak is happening in the U.S., especially in California. Whooping cough, also called pertussis, is a highly contagious bacterial infection that causes severe coughing spells and respiratory inflammation of the upper airways. It is spread when an infected person coughs or sneezes, sending bacteria airborne. Whooping cough can be tough to diagnose because early symptoms are mild and resemble a cold. In some people, this infection can lead to pneumonia and in severe cases, even death.