Had I read this book any time but now I would have dismissed it as pure hyperbole and a thriller which was not believable at all. But now in the midst of the Covid 19 Pandemic, I cannot but think that all the situations mentioned in the book- medical, geopolitical, Bio-terrorism - are not only possible but quite probable. Dr. Henry Parsons an epidemiologist is the hero of the book which is realistic to be almost frightening. I do not wish to say anything more as it would be a spoiler. However, I would caution you that if the latest Corona virus is causing you anxiety don't read this book. On the other hand if you want to find out the limits to which the pandemic could take us, by all means read the book right away.