Everyone has heard of whooping cough. It’s a disease that causes a cough, runny nose, and fever—not unlike many other viruses. The cough can be severe for infants, causing coughing fits that can lead to vomiting and the classic “whoop” noise upon catching your breath....
What is “herd immunity,” and are vaccines a good way to achieve it? You’ve probably heard the term before, and (aside from the indignity of being compared to cattle) it seems to make good sense. The idea is that when everyone is vaccinated against a contagious...
