More info than you wanted - have a look here! (It would be great if they DID have lungworm - then the med will clear it up and you'll have an answer!)

http://ezinearticles.com/?Is-Your-Ca...orm?&id=732729

http://www.cat-world.com.au/LungwormInCats.htm

http://www.petplace.com/cats/lungwor...ats/page1.aspx