Sand fly fever
Introduction
Introduction to Baijiu Sandflyfever is an acute viral disease caused by the white sputum virus that is transmitted by the ferrets. Clinically, it is characterized by fever, headache, myalgia, conjunctival hyperemia and leukopenia, and the prognosis is good. basic knowledge The proportion of illness: 0.04%-0.05% Susceptible people: no specific population Mode of transmission: insect vector transmission complication:
Cause
Chalk fever
(1) Causes of the disease
The white sputum fever virus is an arbovirus virus, and there are at least 20 serotypes. The virus can be isolated from suckling mice and hamsters, and can also be cultured with Vero cells to produce cytopathic effects.
(two) pathogenesis
The virus enters the human body through a white bite, and reaches the reticuloendothelial system through lymphatic vessels and capillaries to reproduce. After reaching a certain amount, it enters the blood circulation, causing viremia, causing systemic diseases, and invading the central nervous system.
Prevention
White fever prevention
The main preventive measures are the use of pesticides to eliminate white peony and improve living conditions. There is currently no vaccine.
Complication
Chalk fever complications Complication
May be complicated by encephalitis or meningoencephalitis.
Symptom
White fever symptoms common symptoms eye pain photophobic leukocytes reduce conjunctival hyperemia myalgia
The incubation period is 3 to 6 days.
High fever, peak within 24h, 2 to 4 days later, a few have bimodal fever, accompanied by headache, myalgia, photophobia and eye pain, conjunctival hyperemia, facial and upper chest can be flushed, sometimes With diarrhea or constipation, slow pulse is not common, white blood cells are reduced, and cerebrospinal fluid is normal.
Examine
Chalk hot check
Leukopenia, early lymphocyte reduction, lymphocyte classification increased by 40% to 60%.
X-ray chest radiographs showed no abnormalities.
Diagnosis
White fever diagnosis
1. Clinical diagnosis According to epidemiological data and clinical manifestations, a preliminary diagnosis can be made.
2. Laboratory diagnosis relies on virus isolation and serological examination.
It should be differentiated from influenza and dengue fever.
