Genetic Diversity of <i>Pneumocystis carinii</i> Isolated from Human Immunodeficiency Virus-Positive Patients in Turin, Italy

Abstract

By DNA sequence analysis we identified two new strain types and five novel sporadic variations among 25 isolates of Pneumocystis carinii f. sp. hominis obtained from 19 human immunodeficiency virus-positive patients. Of these, 13 were infected with a single strain and 6 were coinfected. Fifteen different combination types were identified among the 18 strains for which complete molecular typing was accomplished.