The Nigerian government and health care workers have been on a mission to vaccinate children against deadly diseases like measles. Where health care teams go door-to-door, tirelessly working to protect children from this preventable illness. Yet, some Nigerian parents are hesitant, even refusing these vaccines, fearing that the health workers administering them are unprofessional or not qualified enough.Why is this happening? And what does it mean for the health of these communities—and the n...