A new edition of a classic book on viral catastrophes--the Spanish flu, the Avian flu, and now, Covid-19In his book, The Monster at Our Door,  the renowned activist and author Mike Davis warned of a coming global threat of viral catastrophes. Now in this expanded edition of that 2005 book, Davis explains how the problems he warned of remain, and he sets the COVID-19  pandemic in the  context of previous disastrous outbreaks, notably the 1918 influenza  disaster that killed at