John Snow, by Jack Challoner

John Snow, by Jack Challoner
Publisher: A&C Black (Bloomsbury)
ISBN: 1408178400
112 pages, paperback
Published March 2013
Source: Goodreads First-Reads

This short biography covers the work of doctor John Snow in investigating outbreaks of cholera in England, a key event in the development of the science of epidemiology, tracing an illness back to its source and ultimate cause. Although Snow was no microbiologist, and it fell to Koch to eventually clearly identify the bacteria Vibrio cholera as the causative agent of the disease, Snow’s work laid the foundations for establishing a way to control cholera, namely to focus on water supplies rather than the prevailing view of the time, ‘bad air’.

Challoner, an established writer of communicating science to a lay audience, particularly youth, writes this geared for older children and young adults, but for those unfamiliar with Snow’s work and epidemiology, it would be quick, highly readable primer on the topic. Challoner focuses on the cholera-related work of Snow, rather than writing an all-encompassing birth-to-death biography, though he does discuss tangentially Snow’s role as physician and pioneering anesthesiologist.

Despite focusing on this history of science and medicine, Challoner relates the story with descriptive warmth, including small details of everyday life at the time (mid-late 1800s) and conversationally, anecdotally through the thoughts of Snow and those he comes in contact with in his endeavors. Though fabricated in that retelling, the facts behind the story, the history, remain solidly accurate to my eye.

Beyond introducing Snow’s accomplishments, this book in general outlines the scientific process of mystery, curiosity, research, refinement, and ultimate success, but with more work for others to carry on. In this sense it is a good general introduction of children to science in general.

The only drawback to the book relates to who the audience may actually be. With text alone, it tends towards the dry and detail-laden, including some medical/scientific vocabulary, despite being related in a straight-forward way, more relatable perhaps to an adult. Yet, it is written in a short and succinct manner with phrases interspersed in the detail that seem geared towards the young. It thus seems most appropriate for a teen with a keen interest in science or medicine, or as a fine source for some school project or paper.

Four Stars out of Five

Virus Hunt: The Search for the Origin of HIV, by Dorothy H. Crawford

Virus Hunt: The Search for the Origin of HIV, by Dorothy H. Crawford
Publisher: Oxford University Press
224 pages, Kindle Edition
Published August 2013
Source: NetGalley

Other books, such as “And the Band Played On” have well-covered the story of HIV and AIDS breaking into public consciousness throughout the world in the early 1980s, its social and political effects, and the response of the medical and scientific community. Here, however, the focus is on the actual appearance of HIV in the world – long before we humans were aware of its existence. Where in Africa did HIV come from? When did it first arise to infect humans? How did it get from a virus that infects monkeys and apes to one that infects humans? I have even heard people ask, “If HIV is gotten through sex, then that means someone must have had sex with a monkey at some point!” Well, this is untrue, so if you ever thought something like this, then please please do read this book. These are the questions addressed by Crawford, and their answers have ramifications both for how AIDS seemed to suddenly spring out of nowhere into our human lives and for how we should consider future viral pandemics.

The answers to those questions take the reader through chapters that blend medicine, science, ecology, evolution, and the sociopolitical history of West-Central Africa. Unless you are already an expert on the latest scientific findings on the origin of the HIV, you will probably learn a great deal that is new. The book begins by briefly introducing and dispelling one of several misconceptions or ‘mis-informations’ about AIDS, namely the erroneous assertion that AIDS is not caused by HIV. Crawford then introduces the topic of related viruses that infect are evolutionary relatives (the simian immunodeficiency viruses or SIVs) and begins to set the stage for explaining how we know where AIDS generally comes from. She then focuses in with each chapter to address more specific matters that recent scientific experiments have brought to light, such as what kind of ape the different types of HIV variants came from, down to the specific area and people who were likely the first infected back around the early 1900s, approximately. The book concludes with a molecular discussion of HIV and how that relates to its origins and dissemination and a final discussion on the nature of viral pandemics in general, with future prospects considered.

The copy I read is an unfinished proof, and I assume misprints will be caught and changed. However, the start of the book in particular was hard to get into due to some very awkward sentence structures and several sentences that were vague or grammatically problematic. Beyond the first chapter this issue went away, and it may not even be a problem in the final product.

Crawford knows the material, and she does a fine job of distinctly conveying information that we know as scientific fact from that which leads to educated guesses or downright conjecture. However, her familiarity with the material may also be an impediment for the general reader who does not have any prior knowledge of virology or HIV. Many concepts are discussed in bits throughout the book, only being completely explained later, and many of the more scientific sections can be daunting and dry to read for a nonspecialist (such as the myriad SIV and HIV variants and subtle – though important – differences). Her writing becomes far less technical and more ‘natural’ sounding when she discusses matters outside of direct virology, such as history or anecdotes.

I would recommend this to anyone with an interest in HIV or those curious to learn just how a virus can go from being in a population of non-human primates for centuries, only to cross suddenly into the human population with devastating consequences decades later. If you are concerned if just such an event could happen again then there could be no better volume to read, despite its detailed technical portions.

Four Stars out of Five