Public health officials are searching for a man who brought a rabid bat to a Texas veterinary clinic and may have been exposed to the disease. People can become infected with rabies through bites and scratches or other types of contact with the saliva or nervous system tissue of an infected animal. Early symptoms may appear weeks later and can include headaches and fever, but the disease is progressive and almost always fatal. Authorities hope to find the man soon and remind people to seek medical care immediately if they are bitten by an animal.