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About Rosemary Drisdelle

Rosemary Drisdelle worked as a medical laboratory technologist specializing in parasitology for more than 25 years. She holds an ART from the Canadian Society for Medical Laboratory Science, and a BA with a major in Sociology; and minors in English and Peace and Conflict Studies from Mount Saint Vincent University.
Rosemary’s now a full time freelance writer and editor with occasional interludes to teach parasitology to university students and medical professionals.

Rosemary is the author of Parasites: Tales of Humanity’s Most Unwelcome Guests (University of California Press, 2010), as well as numerous non-fiction articles in periodicals. Her first radio documentary, Worthy Parasites: A Villain’s Silver Lining aired on the CBC radio program Ideas in January, 2013.
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Chris Froome’s Parasite – What is Bilharzia Anyway?

July 21, 2013 by Rosemary Drisdelle 5 Comments

Chris Froome’s Parasite – What is Bilharzia Anyway?

Chris Froome’s claim of chronic bilharzia symptoms from a parasitic infection has been received with skepticism by some. How rare is schistosomiasis really?

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Cyclospora – An Elusive Intestinal Parasite Hiding on Raw Produce

July 16, 2013 by Rosemary Drisdelle 1 Comment

Cyclospora – An Elusive Intestinal Parasite Hiding on Raw Produce

Cyclospora cayetanensis is a sometimes-rare parasite that has affected over 100 people in the most recent outbreak of food-borne gastroenteritis.

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Candiru – A “Don’t Pee in the Water” Horror Story Debunked

June 30, 2013 by Rosemary Drisdelle 23 Comments

Candiru – A “Don’t Pee in the Water” Horror Story Debunked

The story of tiny parasitic fish that swim into your body if you urinate while swimming has floated all over the Internet. Are candiru really dangerous to swimmers?

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A Study of Food Webs – How Do Parasites Affect Complex Feeding Interactions?

June 12, 2013 by Rosemary Drisdelle Leave a Comment

A Study of Food Webs – How Do Parasites Affect Complex Feeding Interactions?

New research indicates that including metazoan parasites in food webs results in structural changes, but most are not unique to this group of organisms.

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Sarcocystis neurona: A Parasitic Threat to Kentucky Derby Hopefuls

May 1, 2013 by Rosemary Drisdelle Leave a Comment

Sarcocystis neurona: A Parasitic Threat to Kentucky Derby Hopefuls

Will an obscure parasite affect any of this year’s Kentucky Derby racehorses? Infected possums pose a risk to all horses, but particularly those that race.

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Giant African Land Snails and the Rat Lungworm in Florida

April 24, 2013 by Rosemary Drisdelle Leave a Comment

Giant African Land Snails and the Rat Lungworm in Florida

Giant African land snails, some infested with the rat lungworm, which can infect humans, are a problem in Florida; researchers work to reduce snail populations.

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On Earth Day, Remember Parasites

April 22, 2013 by Rosemary Drisdelle Leave a Comment

On Earth Day, Remember Parasites

Parasites are a vital part of many life cycles, so why not take a moment to think about leeches, pea crabs, and other creepy crawlies this Earth Day?

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Bean Leaves Snare Bed Bugs: Can They Help Us Build a Better Trap?

April 12, 2013 by Rosemary Drisdelle 1 Comment

Researchers have uncovered the mechanism by which bean leaves trap bed bugs, and are working to simulate the process mechanically.

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Foraging and Parasites: Are You In Danger When You Eat Wild Food?

April 10, 2013 by Rosemary Drisdelle 3 Comments

Foraging and Parasites: Are You In Danger When You Eat Wild Food?

When you are foraging for wild food, keep parasites in mind – your snack could be contaminated by larvae that will infest you or your pets.

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Acanthamoeba – The Parasite That Eats Eyes

April 3, 2013 by Rosemary Drisdelle 2 Comments

Acanthamoeba – The Parasite That Eats Eyes

Acanthamoeba is a parasite to avoid. Are your contact lenses clean? If you’re rinsing them with tap water, or wearing them the swimming pool, probably not.

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