Could we be facing a flu pandemic?

The number of new flu viruses is increasing and could lead to a pandemic, say Australian epidemiologists C Raina MacIntyre, Professor of Infectious Diseases Epidemiology, Head of the School of Public Health and Community Medicine, UNSW; Abrar Ahmad Chughtai, Epidemiologist, UNSW; Chau Bui, PhD candidate, UNSW Influenza has affected humans for over 6,000 years, causing pandemics at regular intervals. During the 1918