1. A protozoal
infection of the lungs. 2. A life-threatening lung
infection that can affect people with weakened immune systems, such as those infected with HIV. More than three-quarters of all people with HIV disease will develop
PCP if they do not receive treatment to prevent it. The standard treatment for people with
PCP is either a combination of trimethoprim and sulfamethoxazole (TMP/SMX, also called Bactrim or Septra) or
pentamidine. See also
Pentamidine;
Protozoa.