FILE - This 2016 illustration provided by the Centers for Disease Control and Prevention, based on electron microscope imagery, depicts Bordetella pertussis bacteria, which causes whooping cough.

This 2016 illustration provided by the Centers for Disease Control and Prevention, based on electron microscope imagery, depicts Bordetella pertussis bacteria, which causes whooping cough.

An illustration of Bordetella pertussis bacteria, which causes whooping cough (Meredith Newlove/CDC via AP, File) Whooping cough tends to peak around this time of year and in the fall. It's ...

Today’s whooping cough vaccines contain an acellular pertussis component, which is derived from inactive parts of the bacterium that causes whooping cough, Bordetella pertussis, per CDC.

depicts Bordetella pertussis bacteria, which causes whooping cough. (Meredith Newlove/CDC via AP, File) (Uncredited) Whooping cough cases are rising, and doctors are bracing for yet another tough ...

Whooping cough is a respiratory infection caused by the bacteria Bordetella pertussis. It is characterized by intense coughing fits that can end with a “whooping” sound when someone exhales.

Preliminary data from the U.S. Centers of Disease Control and Prevention says the U.S. has seen 8,485 cases of whooping cough ...

FILE - This 2016 illustration provided by the Centers for Disease Control and Prevention, based on electron microscope imagery, depicts Bordetella pertussis bacteria, which causes whooping cough.

depicts Bordetella pertussis bacteria, which causes whooping cough. (Meredith Newlove/CDC via AP, File) (Uncredited) Whooping cough cases are rising, and doctors are bracing for yet another tough ...