National Institutes of Health (National Institutes of Health)According to a report by , there are four main strains of dengue namely – DENV-1, DENV-2, DENV-3 and DENV-4, DENV 2 or D2 was already present but now these other variants have become more severe and dangerous. The special thing is that this strain creates immunity against itself, while the other strain can cause dengue again. World Health Organization (WHO) According to this, when these two strains attack together, the condition of dengue becomes dangerous.
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D2 most aggressive in the country
Indian Institutes of Science (IISc) According to a multi-institutional study by , the D2 strain has become the most dangerous strain in the last few years. Until 2012, its D1 and D3 strains were more aggressive.
Changes in dengue symptoms
The D2 strain has altered symptom behavior. As such, this strain caused sudden drops in platelet counts. Now it has also increased the risk of dengue hemorrhagic fever (DHF). Apart from this, symptoms such as fever, headache, eye pain, joint pain, vomiting, rashes, constant thirst, weakness, bleeding gums and nose are being observed.
What is dengue hemorrhagic fever?
Dengue hemorrhagic fever (DHF – NIH) is the most severe form of the disease. It can be identified by high fever, hemorrhagic phenomena, hepatomegaly and circulatory disturbances. Initially, the patient has anorexia, nausea, headache and joint pain.