The term contagious disease is identified in base64 scheme by the sequence Y29udGFnaW91cyBkaXNlYXNl, while the MD5 signature is equal to d31f0c4f9998a475c4e477b2cbd1a83c. The ASCII encoding of contagious disease in hexadecimal notation is 636f6e746167696f75732064697365617365.