Whooping cough vaccine less effective because the bacteria is mutating, study suggests
The vaccine for whooping cough doesnʼt work as well as it used to, and new research suggests itʼs largely because the bacteria behind the disease has mutated. Researchers at the Centers for Disease Control and Prevention analyzed lab samples from patients with whooping cough between 2000 and 2013 and found Bordetella pertussis, which causes whooping…