Outbreaks of deadly illnesses could follow if anti-vaccine messages continue, doctors fear - CDC says 90 people affected in E. coli outbreak linked to McDonald's Quarter Pounders - Petting farm in Campbell River, B.C., culls entire bird flock over avian flu outbreak - Washington coast avian flu outbreak devastated Caspian terns, jumped to seals - Mass poultry cull ordered after Yorkshire bird flu outbreak over fears it may jump species - About 10 per cent of N.B. students not immunized against measles, as outbreak grows - About 10 per cent of N.B. students not immunized against measles, as outbreak grows - Misinformation really does spread like a virus, according to mathematical models drawn from epidemiology - Shredded chicken identified as likely cause of University of Canterbury student sickness outbreak - Bird flu has been found in a pig for the first time in the U.S.