Why dengue infection happened more than once?
Dengue fever is a viral infection caused by one of any of four related viruses: dengue virus 1, 2, 3, and 4. A person can be infected with dengue multiple times in their life.
DENV infection causes a spectrum of illness ranging from asymptomatic to dengue fever to severe dengue shock syndrome. Mild dengue fever causes a high fever and flu-like symptoms. The severe form of dengue fever, also called dengue hemorrhagic fever, can cause serious bleeding, a sudden drop in blood pressure (shock) and death.
Infection with one serotype confers lifelong immunity against that serotype, but heterologous infection leads to severe dengue hemorrhagic fever due to antibody-dependent enhancement.
Diagnosis of dengue infections is based mainly on serological detection of either antigen in acute cases or antibodies in both acute and chronic infection. The colloidal gold dengue test reagent produced by Xiamen Wiz Biotech Co., Ltd will provide infection info for doctor to make the diagnosis.