Asymptomatic spread of flu is not proved
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EDITOR—Macfarlane and Lim state that infection control of pandemic flu would be challenging because “unlike SARS, flu is highly infectious before patients develop definite symptoms.”1
What is the evidence for …
[1] C. Fraser,et al. Factors that make an infectious disease outbreak controllable. , 2004, Proceedings of the National Academy of Sciences of the United States of America.
[2] W. Lim,et al. Bird flu and pandemic flu , 2005, BMJ : British Medical Journal.