Question

Need immediate help What are the metazoan parasites that can cause auto infection in human being?

Answer 1

It is given by the mnemonic

SETH

S - `Strongyloides` `sterco ralis`

E - `Enterobius` `vermicu l aris`

T - `Taenia` `solium`

H - `H y m e n o l e p i s` `n a n a`

Autoinfection is a condition where without the help of any infective stage of the metazoa,we acquire its part of life cycle because of its behaviour or our responsibilities,while already suffering from the disease.

In other words it is a process where the host gets reinfected by the parasite itself during one ongoing infection.

Like in case of Enterobius female worms lay egg in the region of anus,so children suffer from intensive itching,and the eggs get lodged with in the nail beds and causes fecooral transmission.