Social & Preventive Medicine Communicable diseases 10f456ed All are true about J.E. Except - A Transmitted by culex mosquitoes B Death occur in 9 days C Case fatality rate 80 to 90% D Duration of prodromal symptoms 1-6 days High-Yield Explanation Case fatality rate varies between 20-40 per cent. Ref: PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition pg 286