Was Cyclospora Ever “Very Good”?

by Ken Ham on July 29, 2026
Featured in Ken Ham Blog

The parasite Cyclospora is currently making hundreds of people across the United States sick and causing many to avoid buying lettuce at the grocery store! In a biblical worldview where we know that God created everything, including microscopic organisms, how do we explain pathogens like this one?

Well, we start with the big picture given to us in God’s Word: God created a perfect world that was marred by human sin. Everything was “very [exceedingly] good.” Now all of creation is groaning.

We know from Scripture that Cyclospora was not making people sick before the Fall. There were no nasty parasites in God’s original “very good” creation. And yet, we have them today, so what happened to turn “very good” creatures into disease-causing nightmares?

When we have questions about the past, we start with the eyewitness account of God’s Word.

The short answer is we don’t know for sure the biological mechanisms that turned parasites nasty. We do know there were at least some biological modifications at the time of the Fall (e.g., thorns and thistles and the serpent being cursed above all the cattle and beasts of the field), so it’s possible other creatures, including microscopic ones, were physically changed by God at the Fall to allow them to continue to survive in a fallen world.

It’s also possible that mutations (genetic mistakes) and genetic losses contributed or that creatures simply became parasitic with little to no adjustment (even evolutionists, who have to explain the origin of parasites, believe creatures could have become parasitic with few changes). More research is needed, but as always, when we have questions about the past, we start with the eyewitness account of God’s Word. (You can learn more about the origin of parasites in this article on our website).

Want to share the truth about Cyclospora with others? AiG’s director of research Dr. Georgia Purdom did a great job giving an answer in this short video for our YouTube channel:

I encourage you to share it with others!

Thanks for stopping by and thanks for praying,
Ken

This item was written with the assistance of AiG’s research team.

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