Scientists are warning that long dormant diseases might make a comeback. Climate change has caused the permafrost to melt in areas where disease-causing germs may have been buried.
Smallpox vials were discovered inside an old storage area in Bethesda, MD.
The World Health Organization (WHO) plans on completely eliminating the polio virus by 2018.
A San Diego man was infected with a smallpox-related virus after having sexual contact with someone who had recently been vaccinated, according to a new government report. The new report from the Centers for Disease Control and Prevention revealed that the infected 24-year-old man then passed the virus along to another unvaccinated individual during sexual activity in a process called tertiary transmission.