Why some parasitic worms persist in people

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A new study may explain why some people struggle to expel parasitic worms that infect their intestines. The research suggests that the phenomenon is primarily a numbers game: Large groups of worms can overwhelm the immune system and kick-start a self-perpetuating cycle that nearly guarantees their survival, whereas smaller groups and lone worms cannot.

This full article appears on <a href="https://www.sciencedaily.com/releases/2019/05/190522101939.htm">Science Daily</a>

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