What is the prevalence of helminth infections in developing countries attributed to?

The prevalence of helminth infections in developing countries is primarily attributed to poor sanitation and hygiene. In many regions where these infections are common, inadequate sanitation facilities and lack of proper waste management create environments conducive to the transmission of helminth infections. Contaminated water supplies, soil, and food are significant transmission routes, especially in communities where individuals may come into contact with fecal matter.

Furthermore, poor hygiene practices, such as not washing hands properly after using the restroom or before meals, exacerbate the risk of infection. The environment in developing countries often lacks the infrastructure necessary to prevent these infections, leading to a higher prevalence among the population.

While lack of vaccinations and access to healthcare can contribute to various health issues, they are not the primary factors in the prevalence of helminth infections. Importation refers to travel-related or trade-related introductions of parasites, but it does not account for the widespread endemic nature of these infections in developing areas where poor sanitation and hygiene are critical factors.