<prompt> With reference to mumps which of the following is true -Meningoencephalitis can preced parotitisSalivary gland involvement is limited to the parotidThe patient is not infectious prior to clinical parotid enlargementMumps orchitis frequently leads to infeility  <response>: Mumps meningitis may occasionally occur in the absence of parotitis. Mumps meningitis and encephalitis usually resolve without deafness REF:ANANTHANARYANAN TEXTBOOK OF MICROBIOLOGY 9EDITION PGNO.508 