Parasite by Mira Grant

Parasitology series, bk 1. Orbit, 2013. ISBN 978035650192.
(Age: 15+) This science fiction is to be the first of a trilogy entitled Parasitology. It is based on the idea that humans are healthier when hosting a parasite, notably a tape worm. (This is indeed supported by scientific studies in reality.) It is set about fourteen years into the future, with most of the action occurring in 2027. Multinational company Symbogen has patented a pill containing genetic material from tapeworms and other unspecified gene sources, marketed it aggressively, and vast numbers of people now host these parasites in supposed harmonious symbiosis. All is not as it seems, however, as people start coming down with a fatal 'sleepwalking' sickness.
The novel is an engaging and pacey read, reminiscent of Michael Crichton, and would certainly translate well into an action thriller movie. It would be a good addition to the library shelves, and would appeal to older students.
Anne Veitch