Dying Guinea Pigs

Question
Hello,
      Where I work, we housed a number of guinea pigs, five females in one section, two males in another then a separate male. Over the past months each one has died off every week or two in a week. We lost all of them before christmas even with us disinfecting their hutches and them on coming into contact with each other. We have since added two new guinea pigs, and one showed signs the other ones did, and has sadly passed and we think the last one is next. We have taken them to the vets before, they said it was nothing, gave an injection and the guinea pig died later that day. We have rabbits within the same area and they have been fine.
  The clinical signs as not pooping, no urination, discharge around the genitals and nose.
  We would really like to solve this mystery as we had two guinea pigs born in a completely separate area and would like to give them a bigger space but are unable to due to this disease.
     I hope you can help us.

Answer
It sounds like you have a virus in the housing area and that's a hard thing to get a handle on. You don't say where you work, but my impression is there are other animals. If you have dogs in the area you may have a Bortadella (Kennel cough) virus that's killing your pigs. That's one of the only things that a guinea pig can catch from dogs.  

They don't show the same symptoms that dogs would and don't have the cough. But the Bortadella can wipe out a caviary in a short time.  I had a similar situation in my own caviary last year and lost 15 of my best pigs to it. It took some time to track down what the common denominator was but when I learned that a couple of breeder friends had the same thing going on we realized that we'd each gotten pigs from a breeder that raised two or three breeds of dogs.  Having been ill herself, the area where the animals were housed was not in the best condition. The pigs we brought in were already infected with the virus and we hadn't quarantined them for a couple of weeks as we should have.

What I had to do was take every stackable cage of pigs out.  We scrubbed down every cage with bleach water, did the walls, floors and anything else that came in contact in the area.  We repainted the walls, etc.  We cleaned like we were terminally cleaning an operating room.  It stopped the virus and I haven't lost any since.

I would recommend you do the same thing to the area you have the pigs and see if that doesn't stop whatever airborne or contact virus that is present.