text_original: As a working hypothesis I would suggest that there are two strains of yellow fever virus ; one of great viru  lence, one of little virulence. Specifically the same, they are mutually protective. They differ only in their respec  tive pathogenicity.
text_transcription: AS A WORKING HYPOTHESIS I WOULD SUGGEST THAT THERE ARE TWO STRAINS OF YELLOW FEVER VIRUS ONE OF GREAT VIRULENCE ONE OF LITTLE VIRULENCE SPECIFICALLY THE SAME THEY ARE MUTUALLY PROTECTIVE THEY DIFFER ONLY IN THEIR RESPECTIVE PATHOGENICITY
phonemes: æz ɐ wˈɜːkɪŋ haɪpˈɑːθəsˌɪs aɪ wʊd sədʒˈɛst ðæt ðɛɹˌɑːɹ tˈuː stɹˈeɪnz ʌv jˈɛloʊ fˈiːvɚ vˈaɪɹəs ; wˈʌn ʌv ɡɹˈeɪt vˈɜːɹuː lˈɛns, wˈʌn ʌv lˈɪɾəl vˈɪɹələns. spəsˈɪfɪkli ðə sˈeɪm, ðeɪ ɑːɹ mjˈuːtʃuːəli pɹətˈɛktɪv. ðeɪ dˈɪfɚɹ ˈoʊnli ɪn ðɛɹ ɹᵻspˈɛk tˈaɪv pˌæθoʊdʒˌɛnˈɪsᵻɾi.