The Collaborative International Dictionary of English v.0.48:

Malarial \Ma*la"ri*al\, Malarian \Ma*la"ri*an\, Malarious
\Ma*la"ri*ous\, a.
   Of or pertaining, to or infected by, malaria.
   [1913 Webster]

   Malarial fever (Med.), a fever produced by malaria, and
      characterized by the occurrence of chills, fever, and
      sweating in distinct paroxysms, At intervals of definite
      and often uniform duration, in which these symptoms are
      wholly absent (intermittent fever), or only partially so
      (remittent fever); fever and ague; chills and fever.
      [1913 Webster] malaria mosquito

The Collaborative International Dictionary of English v.0.48:

Remittent \Re*mit"tent\ (r?-m?t"tent), a. [L. remittens, p. pr.
   : cf. F. r['e]mittent.]
   Remitting; characterized by remission; having remissions.
   [1913 Webster]

   Remittent fever (Med.), a fever in which the symptoms
      temporarily abate at regular intervals, but do not wholly
      cease. See Malarial fever, under Malarial.
      [1913 Webster]