Margaret Chan , Chinese public servant
said about History, Time, Evolution, First...
"For the first time in history we can track the evolution of a pandemic in real time. Influenza viruses are notorious for their rapid mutation and unpredictable behaviour."
- Margaret Chan Read all Margaret Chan quotes, or find out more about Margaret Chan
"For the first time in history we can track the evolution of a pandemic in real time. Influenza viruses are notorious for their rapid mutation and unpredictable behaviour."- Margaret Chan