Exposure
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- Exposure
Rabies in humans is a preventable disease if exposure is recognized and treatment is given in a timely manner.
Exposure to rabies may occur by any of the following (other possible routes of exposure exist but are rare):
- A direct bite from a contagious rabid mammal.
- A scratch from a rabid mammal that breaks the skin.
- Saliva or neural tissue from a contagious rabid animal contacting an open wound or break in the skin.
- Saliva or neural tissue from a contagious rabid animal contacting mucus membranes such as the eyes, nose or mouth.
Immediately washing a bite or scratch with soap and water can greatly reduce the risk of rabies.
The rabies virus can survive on inanimate objects for as long as it takes the saliva to completely dry. Sunlight will kill the virus, while freezing and moisture can help preserve it. The virus is killed by most disinfectants. There has never been a documented case of rabies transmitted to humans from an inanimate object.
Bats are a cause of human rabies cases in the United States. The Centers for Disease Control and Prevention now recommends that every bat found inside a building or home be tested for rabies if there was possible human contact (e.g. if people were sleeping in the room). This is because it is possible to be bitten by a bat and not even know it.
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- What happens if a person thinks they have encountered a rabid animal or have been bitten by a mammal?
First, a person should understand how rabies can be transmitted from an animal. See Exposure.
By law, all animal bites in PA must be reported by the medical professional to the Pennsylvania Department of Health. If a person has been bitten, scratched or otherwise exposed to saliva by a mammal that is suspected of having rabies, the animal must be tested for rabies. The only way to test for rabies is to euthanize the animal and have it submitted to an approved laboratory for rabies testing. See: Submitting Animals for Rabies Testing. The Department of Health should be notified by the medical professional and consulted for advice on whether the exposed person should start receiving rabies treatment.
If a person has been bitten by a mammal that is not suspected of having rabies, then the animal must be observed for a period during which the animal is prevented from exposing other people or animals. The Department of Health must be notified by the medical professional and will provide advice on how to proceed.
If the animal is clinically normal (not showing any signs of rabies) by the end of the observation period, then it was very unlikely to have had rabies in its saliva on the day it bit the person and will be released from observation. If the animal shows signs of rabies or dies before the observation period is over, it should be submitted for rabies testing. In some situations, such as when the mammal is a wild animal, euthanasia may be preferential to a period of observation.
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- What if the animal runs away?
If a person has been bitten or scratched by a mammal, either domestic or wild, but the animal is not available for observation or testing, they should seek medical assistance immediately. The medical professional must notify the county or local Department of Health office.
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- What happens to my pet or other domestic mammal if it is bitten or scratched by a rabid animal?
The Department of Agriculture General Quarantine Order that “A dog, cat or other domestic animal which has been exposed to a confirmed or suspected rabid animal and has a valid and current vaccination against rabies at the time of exposure, shall be observed for clinical signs of rabies by the owner or keeper for 45 days. Any suspicion of rabies shall be reported to the Department.” Animal owners will be contacted by a Department representative and will be told what to look for and how to report any suspicion of rabies.
A domestic animal that was previously vaccinated against rabies but where the vaccination has expired prior to exposure or suspected exposure will either be quarantined for a minimum of 120 days by the Department or will be observed by the owner for 45 days with reporting of any suspicion of rabies. Number and timing of previous rabies vaccinations, administration of any post exposure vaccination/s by the attending veterinarian and severity of exposure will be some of the factors considered in determining how these cases will be handled.
The Department of Agriculture will not seize or euthanize your pet or domestic animal for being exposed to rabies. However, in some circumstance euthanasia of the exposed domestic animal may be recommended at the owner’s discretion. Domestic animals that are exposed, whether placed under official quarantine or not, may receive a post exposure vaccination or series of vaccinations as directed by the animal owner’s veterinarian.
What does it mean for my pet to be quarantined?
- The pet must be under the owner's control and on his/her property during the period of quarantine.
- The owner must take precaution to prevent exposure to other people and animals during this time.
- A quarantine sign will be posted by the Department of Agriculture. It is unlawful to remove a quarantine sign.