CLINICAL MEDICINE

Detailed explanation-1: -Paragonimus is a parasitic lung fluke (flat worm). Cases of illness from infection occur after a person eats raw or undercooked infected crab or crayfish. The illness is known as paragonimiasis .

Detailed explanation-2: -Paragonimiasis results from an infection by a member of the genus Paragonimus, the lung fluke. The most common lung fluke that infects humans is P. westermani. Paragonimus species are the only helminthic parasite that naturally inhabits the lungs as an adult worm.

Detailed explanation-3: -Parasites-Paragonimiasis (also known as Paragonimus Infection) Paragonimus is a lung fluke (flatworm) that infects the lungs of humans after eating an infected raw or undercooked crab or crayfish. Less frequent, but more serious cases of paragonimiasis occur when the parasite travels to the central nervous system.

Detailed explanation-4: -Lung fluke infections are transmitted by eating raw, partially cooked, pickled, or salted crab or crawfish that are infected with the immature form of the parasite.

Detailed explanation-5: -Cercariae invade a crustacean such as a crab or crayfish (2nd intermediate host), where they encyst and become metacercariae (the infective stage for mammalian hosts).