<prompt> Following are true of kyasanur forest disease except?Transmitted by Soft tickCaused by retrovirusIncubation Period is 3-8 daysKilled vaccine available  <response>: Ans. is b i.e., Caused by retrovirus Kyasanur forest Disease KFD . KFD is a febrile disease associated with haemorrhages. . Caused by an arbovirus flavivirus group B togavirus. . Disease is common in four districts of karnataka - Shimoga, Noh Kannada, South Kannada and Chikamagaloor. . Vector - Main vector is hard tick but soft tick can also transmit the disease. . Reservoirs - Small mammals, rats and squirrels are the main reservoir. - Monkey amplifying host - Man -- Incidental dead pend host. . Mode of transmission -- Tick bite . Age group -- 20-40 years. . Incubation period 3-8 days. CFs -- 1 Sudden onset of fever, headache, myalgia with prostration. 2 GI disturbances 3 Haemorrhages from nose, gums, stomach and intestine. . For population at risk, killed KFD vaccine is available. 