A mumps outbreak has infected nearly 400 people in Alaska -- because apparently being stubborn and getting mumps is preferable to getting vaccinated.
Seven years ago, the global public health community declared the eradication of rinderpest, a severe viral disease of cattle. But today, Bulgaria says it's dealing with an outbreak of ovine rinderpest. They are two different, but closely related, viruses. Here's some insight into what we know.