I was wondering if anyone knew what bacterial species causes URI in guinea pigs. I work in a hospital laboratory and shudder to think what kind of critters I bring home on myself on a daily basis. I wash my hands after work, before I touch any of my animals but I can't help but wonder if I am putting my babies at risk. I am hoping whatever bacterium it is that causes URI is cavy specific and perhaps I won't even find it at my job. I read so many horror stories of pigs going downhill very very quickly from these infections.