When covering the events and people related to the Cholera outbreak of 1854, this book was enjoyable. Sadly, the epilogue was not as informative or enjoyable because of several inaccuracies relating to the influenza virus. Mr. Johnson failed to mention that one of the reasons that Avian influenza is so virulent is because it is a novel virus, i.e. a virus that the human population has not been previously exposed to, leading to a population that does not have immunity to the virus. Mr. Johnson also incorrectly states that the influenza virus is a DNA virus--influenza is an RNA virus.
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