Support WBURWhooping Cough Vaccine's Protection Fades QuicklyScott HensleySeptember 13, 2012 ShareNurse Fatima Guillen (left) gives 4-year-old Kimberly Magdeleno a whooping cough booster shot at a health clinic in Tacoma, Wash., in May. (AP)
Nurse Fatima Guillen (left) gives 4-year-old Kimberly Magdeleno a whooping cough booster shot at a health clinic in Tacoma, Wash., in May. (AP)