<prompt> All of the following organisms are known to survive intracellularly exceptNeisseria meningitidesSalmonella typhi.Streptococcus pyogenesLegionella pneumophila  <response>: 1. Streptococcus pyogenes grows extracellular and causes pyogenic infection. 2. Intracellular bacteria are - Listeria monocytogenes Legionella Yersinia Salmonella typhi Shigella Neisseria Mycobacterium Francisella tularensis Pneumococci. 3. Obligate intracellular Rickettsia, Chlamydia. 