CT Veterinary Medical Diagnostic Laboratory

Salmonella Testing – Connecticut Veterinary Medical Diagnostic Laboratory

CVMDL vet lab blue sign on the UConn campus with the brick Chemistry building in the background

Salmonella testing at the Connecticut Veterinary Medical Diagnostic Laboratory (CVMDL).

Salmonella infection (salmonellosis) is a common bacterial disease that targets the intestinal tract of humans and animals as well. Salmonella bacteria typically live in the intestines and are shed to the environment through feces. Backyard poultry and wild
birds are susceptible to Salmonella species. They also can carry and transmit Salmonella bacteria even if they look healthy and clean and show no signs of illness.

CVMDL has been routinely performing testing for Salmonella pullorum in backyard chickens.

  • Why Salmonella pullorum (Salmonella enterica subsp. enterica serovar: pullorum)?

Based on the current edition of the Merck Manual of Veterinary Medicine the disease caused by this bacterium (Pullorum disease, white bacillary diarrhea) is characterized by a very high mortality in young chicks and poults. Affected birds tend to huddle, become weak, show lack of appetite, they look depressed and they may have depositions of white colored feces. The disease may also affect older chickens, turkeys, game birds, guinea fowl, ostriches, parrots, peafowl, ring doves and sparrows.

  • Sources of infection for domestic birds.

According with the literature, the disease spreads mainly through contact with infected birds. Transmission from hens to chicks may occur via the egg. Both domestic and wild birds may act as reservoirs for the infection. Other sources of the bacterium could be contaminated feed, water and litter, as well as through contaminated clothing, footwear, vehicles and equipment.

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Tick Testing

Photo: CVMDL

Warmer weather months in Connecticut are the perfect time to get outside and enjoy the sunshine. There are beautiful trails to hike, parks to visit with your children or dogs, and there is the simple joy of lying in the lush, green grass. Of course, with the warm weather also comes with the New England outdoor enthusiast’s nemesis – the tick. These disease-carrying arachnids enjoy moist areas with long grass and will latch onto humans and animals alike. Although there are many different species of tick, people generally think of one tick species in particular when worrying about illness: the deer tick. While the deer tick is predominantly known for transmitting Lyme disease (caused by the spirochetal bacterium, Borrelia burgdorferi) it can also carry other disease causing agents such as Anaplasma phagocytophilum, Babesia microti and Borrelia miyamotoi. These are the causative agents of Granulocytic Anaplasmosis, Babesiosis and Borrelia miyamotoi disease respectively. A single tick has the potential to transmit one, two, or even all four of these illnesses simultaneously! Other species of ticks, such as the dog tick (Dermacentor variablis) and Lonestar tick (Amblyomma americanum) can also be tested for different pathogens known to cause illness in humans and/or animals.

If you find a tick on yourself, your child, or your pet, remove it immediately! The Connecticut Veterinary Medical Diagnostic Laboratory (CVMDL) at UConn’s College of Agriculture, Health and Natural Resources can test the tick for pathogens. Ticks received at the CVMDL are first examined by trained technicians using a microscope. This identification process determines the species of tick, life stage, and degree of blood engorgement, all of which are factors that may impact transmission of pathogens to the person or animal (the host). Ticks may then be tested for the DNA of pathogens that are known to be transmitted by that tick species. Results are reported within 3-5 business days of receiving the sample, and next business day “rush” testing is available for an additional fee.

How to send in ticks: Please send ticks in sealed zip lock bags accompanied by a small square of moist paper towel. The submission form and the “Do’s and Don’ts of tick testing” can be found on our website at http://s.uconn.edu/tickform