Dear Dr. Gott: What are the symptoms of septicemia, and why are people dying from it within two or three weeks? I was told it is blood poisoning, but what is the cause, and why is it not treatable?

It’s not always easy to distinguish norovirus from food poisoning. The two share many of the same symptoms, and when cases of the winter vomiting bug are unusually high – currently more than 45% above ...