paulaedwina
Posted : 8/26/2006 8:14:58 PM
ORIGINAL: Twin
I don't feed my dog raw eggs...
But I just wanted to add that I thought that dogs did not get exposure to the same strains of bacteria as us. Therefore, they would not get salmonella. Am I just off the wall with this thought? [8|]
Well here's what I've learned (and I'm only a public health student so keep that in mind).
1. There are about 2000 serotypes of salmonella that cause human disease. A number of them also cause animal disease but not all are created equal -so that a strain that might cause disease in sheep may only be carried by emu (making the exmples up).
2. HOWEVER Salmonella is very host adaptable and have broad tropic ranges. So for instance typhimurium, responsible for about 26% of food poisoning infections (emedicine.com) vs enteriditis which is about 21% (all the rest are in frequencies of 10s) has a very broad host range including humans, cattle, pigs, sheep, horses, poultry and rodents (Host Adaptation and the emergence of infectious disease:the salmonella paradigm. Molecular Microbiology 2000. vol 36(5) 1006-1014).
It says nothing about dogs, but given these two pieces of information, and the frequency with which we see typhimurium and multidrug resistant typhimurium(DT104 is ampicillin, chloramphenicol, streptomycin, sulfonamides and tetracycline resistant for example) if not yet, soon. CDC identified DT104 in "32% of the Salmonella typhimurium strains isolated from humans in 1996 up from 28% in 1995 and 7% in 1990.
3. Further, there is a resistant structure that typhimurium among others produces called a biofilm. It is a physical network of colonies that is quite resistant to antimicrobials and has to be physically disrupted or otherwise cause a reservoir of continuous infection. So at least from the human point of view, even if dogs are not susceptible, we should really be taking care when handling raw eggs anyway.
This is probably too much. I've been working on this gosh awful final all week! I'm no germphobe, but this just struck me as crucial information to be shared.
Paula