Rodents serve as an intermediate host for Echinococcus multilocularis.

Ring enhancing lesions in HIV patients are associated with Toxoplasma gondii infection.

Diphyllobothrium latum, also called fish tapeworm, causes severe vitamin B12 deficiency due to the parasite absorbing 80% of it. This leads to megaloblastic anaemia.

Snails act as an intermediate host for trematodes.

Onchocerca volvulus infection leads to blindness. It is the main cause of river blindness in Africa and is transmitted by the black fly. It forms nodules in the head.

The method of wrapping the worm around a stick or gauze is speculated to be the source for the rod of Asclepius, the symbol of medicine.

Infections by Baylisascaris procyonis (Racoon worm) are very rare, but very dangerous. This is because the worm migrates to the brain and causes a lot of damage.

Scotch tape technique is used for the diagnosis of Enterobius vermicularis.

Trichinella species are found worldwide and infect a wide variety of animal hosts. Trichinella species is acquired by eating contaminated meat of bear in America. 

This is wrong. Only the encapsulated groups of Trichinella infect the mammalian host.

The farmer was infected by Schistosoma mansoni because sub-terminal eggs are only produced by Schistosoma mansoni. 

The person was affected with amoebic dysentery caused by Entamoeba histolytica.

Elephantiasis tropica is caused by Wuchereria bancrofti. 

Clonorchis sinensis is Chinese liver fluke which causes serum sickness disease. Fasciola hepatica is sheep liver fluke which causes asymptomatic fever. Fasciolopsis buski is giant intestinal fluke which may cause abdominal pain and diarrhoea. Paragonimus westerman is lung fluke which may cause tuberculosis-like symptoms.

Skin is most affected in Ancylostoma caninum infection because larvae cannot penetrate further.