Worst Whooping Cough Epidemic In Decades Strikes California

VALLEJO, CA – AUGUST 11: Vials of Tdap vaccinations sit on a table during the Solano County health fair August 11, 2010 in Vallejo, California. California medical officials are urging California residents to get booster shots for whooping cough as the state is in the midst of the largest outbreak in over fifty years. Close to 1,500 cases of whooping cough have been reported this year, including six cases that resulted in deaths of children under three years old. (Photo by Justin Sullivan/Getty Images)