Vectors may transmit infection by all of the following methods, EXCEPT:: (A) Ingestion, (B) Regurgitation, (C) Rubbing of infected faeces, (D) Contamination with body fluids
Answer is A. Methods by which vectors transmit an infectious agents are: Biting Regurgitation Scratching in infected faeces Contamination of host by body fluids of vectors Ref: Preventive and Social Medicine, by K.Park, 19th edition, Page 92.