Thanks Nina---is it possible you could also send us the original question (from "Lisa")? I'd like to forward to my vet and anyone else I think might be interested/benefit. (I am also extremely interested.) Kerry
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of TenHouseCats Sent: Wednesday, September 07, 2005 3:03 PM To: felvtalk@felineleukemia.org Subject: Re: Adult cat resistance to Felv if she finds the link/cite, PLEASE let us know! On 9/7/05, Nina <[EMAIL PROTECTED]> wrote: > Hello Everyone, > I've been discussing resistance ratios of healthy adult cats to Felv > with the vet that monitors my IBD list. She just sent this to me this > morning and knew you guys would be interested. > Nina > > Lisa...this is a question that comes up quite frequently. > The natural resistance to FeLV infection in cats older than 4 to 6 months > is very well established among feline retrovirologist. While > susceptibility to FIV remains constant throughout life, that simply is not > the case with FeLV. While it is NOT impossible to infect an adult cat, > the inoculate of FeLV has to be really significant (or repeated) in order > to infect. > > This has been shown in virtually all FeLV vaccine Challenge studies > involving adult cats. It is MOST difficult to assess efficacy of an FeLV > vaccine when using adults as controls...because they just don't get > infected. Schering Plough has turned this into a "3-year guarantee" for > their FeLV vaccine (a VERY reactive adjuvanted vaccine). This is a > 'no-brainer'...obviously! Fact is, ALL FeLV vaccines look good in the > long run because of this natural resistance. > > This phenomenon is apparently related to T-cell maturity in the individual > cat and the interaction of those lymphocytes with specific epitopes of > FeLV. > > The updated Feline Vaccination Guidelines are being written now. This > material will be included to more clearly point out this phenomenon. > > I do have a copy of the original paper...it goes back a number of years > now and was published in a virology journal...Richard Olsen (who developed > the first FeLV vaccine for Norden Laboratories) and Jennifer Royjko (sp?) > published the manuscript. I don't have that paper with me...but will try > to dig this out and send the ref if you're really interested in getting > into that. > > RBFord > > > -- MaryChristine AIM / YAHOO: TenHouseCats MSN: [EMAIL PROTECTED] ICQ: 289856892 <hr> IRS CIRCULAR 230 NOTICE. Any advice expressed above as to tax matters was neither written nor intended by the sender or Mayer, Brown, Rowe & Maw LLP to be used and cannot be used by any taxpayer for the purpose of avoiding tax penalties that may be imposed under U.S. tax law. If any person uses or refers to any such tax advice in promoting, marketing or recommending a partnership or other entity, investment plan or arrangement to any taxpayer, then (i) the advice was written to support the promotion or marketing (by a person other than Mayer, Brown, Rowe & Maw LLP) of that transaction or matter, and (ii) such taxpayer should seek advice based on the taxpayers particular circumstances from an independent tax advisor <hr> This email and any files transmitted with it are intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. If you are not the named addressee you should not disseminate, distribute or copy this e-mail.
