Transmission of agent by vectors is facilitate by the following ways except one-: (A) Contamination with body fluids of vectors, (B) Scratching - in of infected feces, (C) Ingestion of infected feces, (D) Regurgitation
Answer is C. Methods in which vectors transmit agents: Biting Regurgitation Scratching in of infective faeces Contamination of host with body fluids of vectors (refer pgno:98 park 23 rd edition)