<prompt> Which of the following is used for the prevention of Pneumocystis jiroveci infection in HIV positive patients?AzithromycinAcyclovirLevofloxacinSulfamethoxazole trimethoprim  <response>: Prophylaxis with trimethoprim-sulfamethoxazole TMP-SMZ prevents- infection with P.Jiroveci, Toxoplasma gondii. Intolerance of TMP-SMZ is common Alternative agents provide less adequate protection against Pneumocystis species. 