Hookworm is a parasitic worm that infests the intestines of humans, dogs, and cats. It belongs to genera Necator and Ancylostoma of Nematoda class.
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Lifecycle of Hookworms
Adult male and female hookworms mate in a dog’s intestine. Every day, the female worm lays several eggs. These eggs are released into the environment via feces. Within 24 to 48 hours, they develop into first-stage larvae (L1) and hatch. During the next 5 to 10 days, L1 molts into infective third-stage larvae and, L3 then infects a host by ingestion or penetrating into the skin.
Ingestion: L3 hookworms pass through the stomach into the small intestine. Here they infect the glands that line the intestinal wall. They emerge and mature into adults after a few days.
Skin penetration: L3 hookworms enter the body through the skin. They then travel through the bloodstream to the lungs, where they enter the tracheaand are swallowed. They end up in the intestine.
Transmammary: Arrested larvae can reactivate during parturition and, can be passed on to puppies via the breastfeeding process. It is one of the most common ways how puppies are infected.
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