<prompt> Brucellosis can be transmitted by all of the following modes, except -Contact with infected placentaIngestion of raw vegatable from infected farmsPerson to person transmissionInhalation of infected dust or aerosol  <response>: Person to person transmission not occur. Mode of transmission of brucellosis are contact infection,food borne infection,air borne infection. Reference:Park;s textbook of preventive and social medicine,K.Park,23rd edition,page no:290-291. p 