In Time For Andrew, Andrew was diagnosed with diphtheria. Drew and Andrew trade places so that Andrew can get the benefits of modern medicine, which can treat Diphtheria. Today we have immunizations against many childhood diseases one of which is Diphtheria. Because of the immunizations Drew received when he was an infant keeps him from getting Diphtheria in Andrew's time.

Click on the following links to learn more about Diphtheria, modern immunizations and alzheimers disease.