Racoon Roundworm
Raccoon roundworm is a common parasite found in the feces of raccoons and other mamals. Raccoons in captivity can be treated with a multitude of de-wormers to remove adult worms, but precautions should always be taken when working or coming in contact with a raccoon or it's feces. Some of these precautions include wearing a mask and gloves, and using bleach to sterilize anything that has been in contact with a raccoon.
The larvae of B. procyonis have a tendency to invade the spinal cord, brain, and eye of humans, resulting in permanent neurologic damage, blindness, or death. Human infection with Baylisascaris appears to be rare. To date, 13 well documented cases, and 1 suspected case, have been reported.
Source: http://dpd.cdc.gov/dpdx/html/Baylisascariasis.htm
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Rabies Virus
Rabies is a preventable viral disease of mammals.Transmission of rabies virus usually begins when infected saliva of a host is passed to an uninfected animal. The most common mode of rabies virus transmission is through the bite and virus-containing saliva of an infected host.
Signs of rabies among wildlife cannot be interpreted reliably; therefore, any such animal that exposes a person should be euthanized as soon as possible (without unnecessary damage to the head) and the brain should be submitted for rabies testing. If the results of testing are negative, the saliva can be assumed to contain no virus, and the person exposed does not require postexposure prophylaxis.
Source: http://www.cdc.gov/rabies/
