<prompt> All are true about J.E. Except -Transmitted by culex mosquitoesDeath occur in 9 daysCase fatality rate 80 to 90Duration of prodromal symptoms 1-6 days  <response>: Case fatality rate varies between 20-40 per cent. Ref: PARK;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition pg 286 