If you had never heard the term "social distancing" before this week, you certainly can't escape it now. 
But why is social distancing so important? To understand that, you need to understand the R0 (R-naught), or Basic Reproduction Number used to measure the transmission potential of a disease.

Learn more at www.contecinc.com

Follow the World Health Organization: @WHO
Follow the CDC: @CDCgov
Follow Contec: @contecinc