Which of the following statements is NOT true regarding Japanese Encephalitis?

The flavivirus which is causing Japanese encephalitis is paicularly common in areas where irrigated rice fields attract the natural an veebrate hosts and provide abundant breeding sites for mosquitoes such as Culex tritaeniorhynchus, which transmit the virus to humans. Additional amplification by pigs, which suffer aboion, and horses, which develop encephalitis, may be significant as well. An effective, formalin-inactivated vaccine is given on days 0, 7, and 30 or--with some sacrifice in serum neutralizing titer--on days 0, 7, and 14. Ref: Peters C.J. (2012). Chapter 196. Infections Caused by Ahropod- and Rodent-Borne Viruses. In D.L. Longo, A.S. Fauci, D.L. Kasper, S.L. Hauser, J.L. Jameson, J. Loscalzo (Eds), Harrison's Principles of Internal Medicine, 18e.