APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Transmission. Soil-transmitted helminths are transmitted by eggs that are passed in the faeces of infected people. Adult worms live in the intestine where they produce thousands of eggs each day. In areas that lack adequate sanitation, these eggs contaminate the soil.

Detailed explanation-2: -Infection. The mode of transmission varies with the type of worm; it may involve ingestion of eggs or larvae, penetration by larvae, bite of vectors, or ingestion of stages in the meat of intermediate hosts.

Detailed explanation-3: -They hatch in soil, releasing larvae (immature worms) that mature into a form that can penetrate the skin of humans. Hookworm infection is transmitted primarily by walking barefoot on contaminated soil. One kind of hookworm (Ancylostoma duodenale) can also be transmitted through the ingestion of larvae.

Detailed explanation-4: -The most common forms of helminthiasis are infections caused by intestinal helminths, ascariasis, trichuriasis and hookworm, followed by schistosomiasis and LF[4]. Clinical features of helminthiases vary a lot depending on the helminth species, intensity of infection, and host age.

Detailed explanation-5: -Helminths, transmitted by contact with soil and known as Soil Transmitted Helminths (STH) or intestinal parasites, are the most common infections worldwide and affect the poorest and most vulnerable populations. The causative agents are Ascaris lumbricoides, Trichuris trichiura, and hookworms.