Hookworms
Hookworms
Hookworms (/ˈhʊkˌwɜːrmz/), scientifically known as Ancylostoma duodenale and Necator americanus, are a type of parasitic helminth that primarily infect the small intestine of their hosts.
Etymology
The term "hookworm" is derived from the English words "hook" and "worm", referring to the hook-like mouthparts of the worm that it uses to attach to the intestinal wall.
Description
Hookworms are small, thin worms that are usually less than half an inch long. They have a curved shape, which gives them their name. The front end of the worm is bent dorsally, forming a hook shape. This hook is used to attach to the wall of the small intestine, where the worm feeds on the host's blood.
Life Cycle
The life cycle of hookworms begins when eggs are passed in the feces of an infected host. These eggs hatch into larvae in the soil, where they can survive for several weeks. The larvae then penetrate the skin of a new host, usually through the feet, and are carried to the lungs. From the lungs, they travel to the small intestine, where they mature into adult worms.
Symptoms and Treatment
Infection with hookworms can cause a variety of symptoms, including anemia, abdominal pain, diarrhea, and weight loss. In severe cases, hookworm infection can lead to developmental delays and cognitive impairment in children. Treatment typically involves anthelmintic drugs, which kill the worms.
Prevention
Prevention of hookworm infection primarily involves good hygiene practices, such as wearing shoes in areas where hookworm is common and properly disposing of human feces to prevent contamination of soil.
Related Terms
External links
- Medical encyclopedia article on Hookworms
- Wikipedia's article - Hookworms
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