Ascaris lumbricoides, which inhabit the human intestine and cause the disease ascariasis.[iStockphoto]

In Luhulu Village, Sabatia Constituency, Vihiga County, three-year-old Shanice Masiza plays cheerfully outside her family’s home, a picture of health that belies the painful ordeal she endured just months ago.

Her mother, Sharon Kaveza, recalls the difficult period when Shanice suffered from soil-transmitted helminths (STH), commonly known as intestinal worms and locally as minyoo.

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