The recent outbreak of mumps at Harvard University was due to the fact that vaccinated students spread the disease throughout the campus, according to the Public Health department. Researchers are now saying that any new outbreaks of mumps are likely to originate from people who are vaccinated against the disease, and not from those who remain unvaccinated. Mercola.com reports: Four other campuses in Boston are also starting to see cases, as have four universities in Indiana. About 13 cases of mumps have also cropped up in California. One ridiculous explanation offered by Dr. Amesh Adalja, an infectious-disease specialist at the University of Pittsburgh Medical Center’s Center for Health Security, is that the vaccine only works if the exposure to the virus is low; it can’t be expected to work if there are high amounts of exposure, such as in dorms: “The exposure that they have to mumps is so high in these situations that it overcomes the ability of the vaccine to protect them,” Adalja told Live Science. “It may be that, in these special situations, a much higher level of antibodies [against mumps] is needed to keep the virus at bay.” In 2009, more than 1,000 people in New [...]