steroids is the treatment for the rat lungworm and turns to meningitis in the brain of a human so the use of steroids cures them.

Yes humans can get Rat Lungworm. You can get them from eating raw or undercooked snails/slugs or by eating rat droppings/urine. Obviously you are unlikely to eat rat waste if you saw it but it can be on grass or the waste can have decomposed but the parasite will still be there, so wash your hands before eating.

I too would like to know the anwer

There are three species of lungworm that affect sheep - Dictyocaulus filaria, Muellerius capillaris and Prostostrongylus rufescens.

The lungworm belongs to the phylum Nematoda. Nematodes are a diverse group of roundworms that can be found in various habitats, including the lungs of animals.