THE PLAGUE YEARS Mankind has always been fascinated by "origins," and
biologists are no exception. Darwin is our most famous example. What is
the origin of mankind, of species, of infectious diseases? In the last
few years we have seen the emergence and spread of some apparently "new"
viruses, such as HIV -1 and the virus causing bovine spongiform
encephalomyelopathy. But are these, in fact, entirely new agents, or
mutated forms of "old" viruses that have evolved along with us for eons?
Edgar Hope-Simpson could not have written this book at a more opportune
moment. He is a firm believer in gradual evolution, rather than the
sudden arrival of new agents. I suspect that he would also have a
naturalist's Darwinian approach for the origin of AIDS. It has been a
source of some amazement to me over the years how even the most
innovative scientists conform to a current hypothesis. Pioneer thinking
comes more easily to persons outside the scientific mainstream. Edgar
Hope- Simpson has always struck me as a modem-day naturalist of the
classic style, observant and perhaps a little maverick in line of
thought. Certainly, the central hypothesis propounded in this book will
be controversial to many scientists. From his unique citadel, the
Epidemiological Research Unit in Cirencester, he has carefully
reexamined mortality data from old records as well as new.