Wearing shoes on bare soil is the single most effective thing you can do to prevent hookworm infection. Hookworm larvae live in contaminated soil and grass, waiting to penetrate exposed skin, most commonly on the feet. But footwear is just one layer of protection. A combination of personal hygiene, pet care, and environmental awareness can nearly eliminate your risk.
How Hookworms Get Into Your Body
Hookworm eggs are shed in the feces of infected people or animals. In warm, moist, shaded soil, those eggs hatch within one to two days and develop into infective larvae about half a millimeter long. These larvae can survive three to four weeks in favorable conditions, lurking in dirt or on grass until they contact bare skin.
Once larvae touch your skin, they release enzymes that break down connective tissue components like collagen and elastin, allowing them to burrow through the outer layers. This penetration process takes anywhere from 30 minutes to 6 hours depending on the species. You may not feel anything at all, though some people develop an itchy rash at the entry site known as “ground itch.” From there, larvae enter the bloodstream, travel to the lungs, get coughed up and swallowed, and eventually settle in the small intestine where they feed on blood. One of the two main species can also enter through the mouth if contaminated soil touches food or hands that you then put near your face.
Wear Shoes on Bare Ground
Shoes create a physical barrier that hookworm larvae cannot penetrate. A meta-analysis of footwear and neglected tropical diseases found that wearing shoes is associated with significantly lower odds of hookworm infection. The type of shoe matters less than simply having something between your feet and the ground. Closed-toe shoes offer the most coverage, but even sandals reduce risk substantially compared to going barefoot.
This applies anywhere soil could be contaminated: gardens, yards, rural paths, parks, and especially tropical beaches. If you’re traveling to a warm, humid region, wear shoes when walking on sand or dirt. When lounging on a beach, sit on a clean towel or mat rather than directly on the sand.
Wash Your Hands Thoroughly
Handwashing with soap is surprisingly powerful against intestinal parasites, including hookworm. A controlled trial among school-aged children in Ethiopia found that handwashing with soap at key times reduced intestinal parasite reinfection rates by 68%. In that same study, weekly fingernail clipping reduced reinfection by 49%, since soil and larvae can lodge under nails.
The critical moments for handwashing are: before eating, after using the toilet, after playing or working in soil, before preparing food, and after handling animals. If you garden, farm, or do any outdoor work that puts your hands in dirt, scrub thoroughly under your nails with soap and water before touching your face or food. Keep nails trimmed short so contaminated soil has fewer places to hide.
Manage Pet Waste and Deworming
Dogs and cats carry their own hookworm species, and some of these can infect humans. Animal hookworms typically stay in the skin rather than reaching the intestines, causing a condition called cutaneous larva migrans, an intensely itchy, winding rash that can last weeks.
The CDC recommends two straightforward steps: dispose of pet waste quickly so eggs don’t have time to hatch and contaminate soil, and make sure dogs and cats receive regular veterinary care including deworming when needed. Puppies and kittens are especially likely to carry hookworms and should be dewormed on the schedule your vet recommends. If pets regularly use a specific area of your yard, pick up feces daily. Larvae thrive in warm, moist, shaded patches of ground, so those are the highest-risk spots.
Protect Yourself While Gardening
Hookworm larvae survive three to four weeks in warm, moist, shaded soil. Any area fertilized with untreated human or animal waste, or where animals defecate, can harbor infective larvae. When gardening or doing yard work, wear gloves in addition to shoes. Thick gardening gloves prevent larvae from contacting the skin on your hands and under your nails.
If you’re working in soil that could be contaminated, avoid touching your face, and wash your hands and forearms with soap as soon as you finish. Wash any vegetables or herbs grown in home gardens thoroughly before eating them, especially root vegetables and leafy greens that contact the soil directly. Peeling root vegetables adds an extra layer of safety.
Sanitation and Clean Water
At a community level, proper sanitation breaks the hookworm life cycle at its source by keeping human feces out of the soil. A Cochrane review of water, sanitation, and hygiene interventions found that these measures pushed hookworm prevalence in a preventive direction, with randomized trials showing a reduction from about 6 infections per 100 people to 5 per 100, and observational studies showing a drop from 13 per 100 to 10 per 100. The effects were modest in these studies partly because sanitation improvements need to be comprehensive and sustained to make a large dent.
For individuals, the practical takeaway is straightforward: use latrines or toilets rather than open defecation, and avoid drinking untreated water in areas where hookworm is common. If you’re in a region without reliable sanitation infrastructure, be especially vigilant about the personal protective steps above.
Precautions for Travelers
Tropical and subtropical destinations with warm, humid climates carry the highest hookworm risk. Beach sand in these regions is a common source of animal hookworm larvae, which cause cutaneous larva migrans. The World Health Organization recommends that beachgoers use clean towels while on the beach, wash hands before eating, shower immediately after beach visits, and wear shoes to minimize contact with contaminated sand.
If you have any open wounds, cover them with waterproof bandages before heading to the beach or walking on bare ground. Even minor cuts give larvae an easier entry point. Avoid sitting or lying directly on sand or soil in areas where stray dogs or cats roam, since their feces are the most common source of the animal hookworm species that cause skin infections in travelers.
Preventive Deworming Medication
In regions where hookworm is widespread, the WHO recommends mass preventive deworming as a public health strategy. This involves periodic doses of anti-parasitic medication given to entire at-risk populations, particularly children and pregnant women in endemic areas.
The two most commonly used medications differ significantly in how well they work against hookworm. In a randomized controlled trial, a single dose of albendazole cured 69% of hookworm infections, while a single dose of mebendazole cured only 31%. When given as three consecutive daily doses, albendazole cured 92% of infections compared to 58% for mebendazole. Even when looking at how much the worm burden was reduced rather than complete cure, single-dose albendazole eliminated 97% of the worm load versus 84% for mebendazole.
If you’re living in or traveling to an endemic area for an extended period, talk to a healthcare provider about whether preventive medication makes sense for your situation. For most short-term travelers, the personal protective measures described above provide sufficient protection without medication.