<prompt> C. diphtheriae is also called as:Pfeffiers bacilliWhitmore bacilliRobert Koch bacilliKleb-Loefflers bacilli  <response>: Ans. is d i.e., Klebs-Loeffler bacillusRef: Ananthanarayan, 9the, 236 and 8the, p. 232The diphtheria bacillus was first observed and described by Klebs but was first cultivated by Loeffler1884. Therefore, it is known as Klebs-Loeffler Bacillus KLB. 