<prompt> Which is the common feature of spirillary rat bite feverLymphadenopathyEndocarditisHepatosplenomeglyAmegakaryocytic thrombocytopenia  <response>: Rat bite fever caused by different bacteria 1streptobacillus moniliformis 2spirillum minus both of which are natural parasites of rodents.spirillary RBF have incubation period of 1_4 weeks.rat bite wound which may have healed suppurates at the onset of fever with regional lymphadenopathy Ref:Anantnarayan and panikers microbiology 10th edition 