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In reference to a vaccine it is stating that the substance, i.e. bacteria or virus has been diluted or weakened.

  An acute contagious disease, attributed to the bacteria, Corynebacterium diphtheriae.

 A general term for disorders or diseases of the brain.

A disease (or condition) commonly found in a particular people, region or environment.

A sudden severe outbreak within a region or group.

Is inflammation of the liver which can have several causal factors.  Inflammation can be caused by bacteria, medication (i.e. acetaminophen), toxic agents and viruses including hepatitis A, B or C.  As with many illnesses symptoms may initially be few, but left untreated can progress to jaundice, lethargy and cirrhosis.  

A disease caused by a virus or parasite which can be transmitted to another host.

Is caused by a virus; one attack confers immunity.  Characteristics of measles after exposure include an incubation period of approximately 7 to 14 days, usually followed by coryza, cough, conjunctivitis and characteristic spots in the mouth (known as Koplic spots).  A few days later chills, fever and a red maculopapular eruption appears first on t [..]