----- Original Message ----- From: "Chris" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, December 08, 2004 12:56 PM Subject: RE: contagiousness of FELV and other thoughts.../strain
> Thank you for clarification.. No no. It was my fault for not being clearer. I tend to ramble on since this disease is always on my mind. I think I understand now. I guess my question > is do FELV+ cats develop all strains? Not necessarily. Or do some get A and then either B or > C? All FeLV-infected cats are infected with FeLV-A. About 50% of the FeLV-infected cats generate FeLV-B, and only about 1% generate FeLV-C. A cat cannot have FeLV-B, or C without having FeLV-A. Ong. > > Chris > [EMAIL PROTECTED] > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > Of Ong Meo > Sent: Wednesday, December 08, 2004 12:50 PM > To: [EMAIL PROTECTED] > Subject: Re: contagiousness of FELV and other thoughts.../strain > > > ----- Original Message ----- > From: "Chris" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, December 08, 2004 12:35 PM > Subject: RE: contagiousness of FELV and other thoughts.../strain > > > > OK-- so what you're saying is that depending on the strain of FELV, it is > > NOT contagious? > > No, I don't think that's what I said. I believe I said "FeLV-A occurs in > all FeLV-infected cats and causes severe immunosuppression" "Only FeLV-A is > transmitted contagiously among cats." > > "FeLV-B or -C are generated de novo by recombination between endogenous FeLV > sequences and the infecting FeLV-A. FeLV-B and FeLV-C are not transmitted > contagiously among cats in nature." > > IOW, all FeLV infected cats are infected with FeLV-A which is tramsmitted > contagiously among cats. FeLV-B and C are generated within the cat by > recombination with the infecting FeLV-A and endogenous FeLV sequences. > > I hope this clears up your confusion. > > Ong > > > > If so, then it really puts into question the tests > > routinely used? What tests could be used to determine the strain? > > > > Chris > > [EMAIL PROTECTED] > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf > > Of Ong Meo > > Sent: Wednesday, December 08, 2004 12:26 PM > > To: [EMAIL PROTECTED] > > Subject: Re: contagiousness of FELV and other thoughts.../strain > > > > > > ----- Original Message ----- > > From: "Gloria B. Lane" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, December 08, 2004 9:03 AM > > Subject: Re: contagiousness of FELV and other thoughts.../strain > > > > > > > I appreciate the thoughtfulness of what you've written so much. I've > > > mixed FELV with negatives, no prob. But always a question - shudder. > > > > > > Have wondered for some time about strains. Does anybody know if > > > there's an available test for the strain of FELV? > > > > > > Gloria > > > > > > Hi Gloria, > > > > I'm new to the group; I hope you don't mind if I butt in. > > > > The differences in the outcome of FeLV infection can be attributed to > > differences in virus subgroups that may be considered strains. FeLV-A, > > FeLV-B, and FeLV-C. > > Only FeLV-A is transmitted contagiously among cats. FeLV-B or -C are > > generated de novo by recombination between endogenous FeLV sequences and > the > > infecting FeLV-A. FeLV-B and FeLV-C are not transmitted contagiously > among > > cats in nature. The subgroups are determined by viral interference > assays. > > These are highly specialized tests and usually available only in research > > and specialized diagnostic labs. > > > > FeLV-A occurs in all FeLV-infected cats and causes severe > immunosuppression > > (weakened immune system). > > > > FeLV-B occurs in about 50% of all FeLV-infected cats and causes more > > neoplastic disease (i.e., tumors and other abnormal tissue growths) than > > cats infected only with FeLV-A. > > > > FeLV-C occurs in about 1% of FeLV-infected cats and causes severe anemia. > > > > hth, > > > > Ong > > > > > > > > > > > > > > > >
