ɪn ðɪs kˈeɪs, ɪnfˈɛkʃən kæn biː ˈæktᵻvˌeɪɾᵻd baɪ vˈɛɹiəs fˈæktɚz, fɔːɹ ɛɡzˈæmpəl, dˈʊɹɹɪŋ ˌɪɹeɪdɪˈeɪʃən, tɹænspoːɹtˈeɪʃən, ɪnfˈɛkʃən wɪð ˈʌðɚ pˈæθədʒənz, ænd ɛkspˌɛɹɪmˈɛntəl lˈoʊd.
In this case, infection can be activated by various factors, for example, during irradiation, transportation, infection with other pathogens, and experimental load.