SALMONELLA BACTERIA AND REPTILES

Most, if not all, reptiles carry salmonella bacteria in their intestinal tract and intermittently or continuously shed these bacteria in their faeces. Salmonella bacteria usually do not cause any illness in reptiles, but can cause serious illness in people.

Juvenile Rough Scale Python 18Salmonella bacteria are easily spread from reptiles to humans. Humans may become infected when they place their hands on objects, including food items that have been in contact with the stool of reptiles, in their mouths. For example, infants have become infected after drinking from bottles of infant formula that became contaminated during preparation. Individuals who prepared the formula had not washed their hands after touching a reptile or because reptiles were allowed to walk on kitchen counters. For Salmonella bacteria to spread from reptiles to humans, the bacteria must be ingested. Therefore, simply touching or holding a reptile will not result in spread of bacteria unless something contaminated with reptile faeces itself, is placed in the mouth.

Most Salmonella infections in humans result in a mild, self-limiting illness characterized by diarrhoea, fever, and abdominal cramps. However, the infection can spread to the bloodstream, bone marrow or nervous system, leading to severe and sometimes fatal, illness. Such severe infections are more likely to occur in infants and in individuals whose immune system is compromised (for instance, bone marrow transplant recipients, persons with diabetes mellitus, persons infected with the human immunodeficiency virus, and chemotherapy patients.)

Unfortunately, Salmonella bacteria cannot be eliminated from intestinal tract of reptiles. Administration of antibiotics to eliminate these bacteria has been unsuccessful and may result in emergence of Salmonella bacteria that are resistant to antibiotics. Attempt to raise or identify reptiles that do not carry Salmonella bacteria have also been unsuccessful; therefore, bacterial culture of stool samples in an attempt to identify reptiles that are not carrying Salmonella bacteria is not recommended.

Turtle 12Fortunately the spread of Salmonella bacteria from reptiles to humans can be easily prevented by using the following routine precautions:

  • Always wash your hands with hot, soapy water after handling reptiles, reptile cages and equipment, and the stool of reptiles.
  • Do not allow reptiles to have access to the kitchen, dining room, or any other area in which food is prepared. Also, do not allow reptiles to have access to bathroom sinks and tubs or to any area where infants are bathed.
  • Do not eat, drink, or smoke while handling reptiles, reptile cages, or reptile equipment. Do not kiss reptiles or share food or drink with them.
  • Do not use the kitchen sink, kitchen counters, bathroom sinks or bathtubs to bathe reptiles or to wash reptile cages, dishes or aquariums. Reptile owners may wish to purchase a plastic basin or tub in which to bathe or swim their reptiles. Waste water and faecal material should be disposed of in the toilet instead of the bathtub or household sink.
  • The Centers for Disease Control and Prevention recommends that children less than five years of age avoid contact with reptiles and those households with children less than one year of age not own reptiles. The Association of Reptilian and Amphibian Veterinarians encourages reptile owners with young children to discuss steps to minimize risks associated with owning reptiles with their reptiles’ veterinarian and their physician. Children should be supervised when they are handling reptiles to ensure that they do not place their hands or objects that a reptile has contacted in their mouths. Reptiles should not be kept in child care centers.
  • Immunocompromised persons should avoid contact with reptiles.
  • Follow instructions from your reptile’s veterinarian concerning proper diet and environment for your reptile. Healthy reptiles living in proper environments are less likely to shed Salmonella bacteria.

Information in this handout is not meant to discourage reptile ownership. With a few exceptions (for example, infants or immunocompromised individuals), most people have a low risk of acquiring salmonellosis from reptiles, but this risk can be reduced even further by following simple precautions. Reptiles can be safely kept as pets, but reptile owners should be aware of the methods for reducing their risk of acquiring Salmonella bacteria from their reptiles.

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