Disclosed are capsular polysaccharide (CPS)-protein immunogenic conjugates useful for providing protection against any condition or disease associated with Burkholderia pseudomallei or Burkholderia mallei, such as melioidosis or glanders, respectively. For example, a disclosed CPS-protein immunogenic conjugate includes purified 6-deoxyheptan capsular polysaccharide (CPS) from B. pseudomallei chemically activated and covalently linked to recombinant CRM 197 diphtheria toxin mutant (CRM197) to produce CPS-CRM197. Methods of inducing an immune response are disclosed. The methods include the use of a CPS-protein immunogenic conjugate, alone or in conjunction with other agents, such as Hcp1 and TssM, to prevent infection with B. pseudomallei or B. mallei. Also disclosed are methods for treating a subject having melioidosis or glanders.