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Regressive fever

Relapsing fever is an acute infectious disease caused by the transmission of relapsing fever spirochetes through insect vectors. Its clinical characteristics are periodic high fever with systemic pain, hepatosplenomegaly and bleeding tendency. Severe cases can have jaundice. According to different media, it can be divided into two types: lice borne return fever (epidemic return fever) and spleen borne return fever (endemic return fever).


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