<prompt> The pathogenicity of major pseudomonads is based on oppuunism. The exception is:PneumoniaOtitis mediaMelioidosisSkin infection  <response>: The pseudomonads are a heterogeneous group of gram-negative bacteria. The members of this group are now assigned to three genera-Pseudomonas, Burkholderia, and Stenotrophomonas. The pathogenicity of most pseudomonads is based on oppounism; the exceptions are the organisms that cause melioidosis B. pseudomallei and glanders B. mallei Ref: Harisson, Edition - 18, Page 1151. 