participates in has participant has_participant immediately preceded by immediately_preceded_by immediately precedes immediately_precedes infection pathogen host organism colonization infection acquistion from self colonization An infection acquisition by which a pathogen organism from a particular biological taxon, which previously was participating in a colonization process in a host organism from another taxon, begins to invade the tissues of the same host organism and reproduce there. An infection acquisition by which a pathogen organism from a particular biological taxon, which previously was participating in a colonization process in a host organism from another taxon, begins to invade the tissues of the same host organism and reproduce there. William R. Hogan establishment of infection from self colonization biological process biological_process entry into host symbiont entry into host