Risk factors

People who are at increased risk of developing cryptosporidiosis include:

• Children, particularly those wearing diapers, who attend child care centers
• Parents of infected children
• Child care workers
• Animal handlers
• Those who engage in oral-to-anal sexual activity
• International travelers, especially those traveling to developing countries
• Backpackers, hikers and campers who drink untreated, unfiltered water
• Swimmers who swallow water in pools, lakes and rivers
• People who drink water from shallow, unprotected wells