Characteristic relapsing fever

Introduction Regression fever is an acute infectious disease caused by the reincarnation of the heat spiral through insect-borne transmission. The clinical features are periodic high fever with systemic pain, hepatosplenomegaly and hemorrhagic tendency. Severe cases may have jaundice. According to different media, it can be divided into two types: rumored regression heat (epide regression heat) and rumor return heat (local regression heat). The return of heat is based on physical and head lice. It is rumored that the media of returning to the heat are different kinds of soft palate. You can carry a spiral body for life. It can be passed on by eggs. Therefore, it is not only a medium of communication, but also a storage host for pathogens.

Cause

1. Source of infection: The only source of infection that rumors return to heat is the patient; the main source of infection for rumor returning to heat is rodents, and patients can also be sources of infection.

2. Susceptible people: both men, women and children are susceptible. Immunity does not last after the illness. There is no cross-immunization between the two types of regression heat.

an examination

Related inspection

Complement binding test Urine routine W (Wassermann's complement binding test)

In most patients, the total number of white blood cells is increased to 1.5 to 2 × 1010 / L, and neutrophils are increased.

1, platelet and clotting time are mostly normal, but severe cases may have abnormalities.

2, serum alanine aminotransferase is often elevated, serum bilirubin can be increased.

3. There are a small amount of protein, tube type and red and white blood cells in the urine.

4, cerebrospinal fluid pressure increased slightly, protein and lymphocytes increased slightly.

5, fever period blood or bone marrow smear staining microscopic examination or dark field examination can be found in the spiral.

Differential diagnosis

Before the disease returns to the fever type, it must be differentiated from typhus, typhoid, influenza, leptospirosis, epidemic hemorrhagic fever, sepsis.

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