The expression patient zero comes from epidemiology. In medicine it describes the first person infected in an epidemic or a pandemic. The expression patient zero comes from epidemiology (the study of the spread of disease.) Epidemiologists are kind of medical detectives. It is important to now where diseases start in order to control them. The term was first used widely in…… Continue reading What is a Patient Zero?
A pandemic is the worldwide spread of a new disease, usually a virus. A pandemic happens when a new virus spreads around the world, and most people do not have immunity, that is, their bodies cannot fight it. Viruses that have caused pandemics have normally come from animal influenza viruses. It’s just the Flu, isn’t…… Continue reading What is a Pandemic?