Birds on the March: The Return of Avian InfluenzaOn February 4, 2003, an eight-year-old girl who was touring China’s Fujian province with her family suddenly fell ill and died. Three days later, while her death was under investigation, the girl’s 33-year-old father developed respiratory problems. The family returned to Hong Kong, where they lived, to mourn and recuperate. But on February 11, the father was admitted to hospital with acute pneumonia. He too died, six days later.