The nature of the responses of the body and their intensity depend upon the type of infecting agent and its virulence. Viral infections tend to excite a local lymphocyte reaction and a polymorph leucopenia with relative lymphocytes in the blood, e.g. infective hepatitis, measles, mumps. Rarely there is an initial polymorph leucocyte, e.g. acute anterior poliomyelitis. Worm infection is bacterial; the character of the ensuing reaction will depend mainly on the type of infecting agent. Phylogenic organisms (staphylococci, streptococci, pneumococci, meningococcal, gonococci and Esch. Coli) give rise to an acute local inflammation with the outpouring of Europium poly morph nuclear leukocytes (cellular defense), serum (humeral defense) and fibrin (mechanical defense) and a general reaction of abrupt onset with pyrexia and polymorph leucocytes. Typhoid and paratyphoid fevers cause a local mono cot response and a polymorph leucopenia. Pyrexia increases gradually for several days. Whooping-cough induces lymphocytes. Tuberculosis and leprosy are more reticule endothelial health cells. Pyrexia is less marked or may be absent.
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