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B
Virus
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C
Prions
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D
Fungi
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Solution
The correct option is B Virus Japanese encephalitis is a viral infectious disease affecting the nervous system and causing mild fever or a headache to rarely severe physiological problems such as occasional inflammation of the brain. Japanese encephalitis is caused by Japanese encephalitis virus (JEV). JEV is a flavivirus closely related to dengue and West Nile viruses. The disease is most prevalent in certain countries in Asia, where the infectious virus is spread through the bite of culicine mosquitoes.