Fefferman and Lofgren believe that it is important to study how people react in a simulation of a pandemic. Scientific knowledge about viruses and developing vaccines is very important for preventing disease. Experts say that knowing how to slow the spread of a pandemic is also essential for global health. Online simulations of pandemics allow scientists to study how people behave and make decisions, and how their behavior affects the spread of a deadly virus. Fefferman and Lofgren are working with Blizzard to use viruses in other games so that researchers can learn more about human behavior in a pandemic. Understanding how humans might react to a health emergency will help experts control the spread of a virus.