ðə sˈɪɹiəsnəs, haʊˈɛvɚ, wʌz nˌɑːt ɹˈiːəlaɪzd, wɪððə kˈɑːnsɪkwəns ðætðɪ ˌæksɪdˈɛntəl ɛkspˈoʊʒɚ wɛnt ʌnnˈoʊɾɪst fɚɹə nˈʌmbɚɹ ʌv mˈʌnθs.
The seriousness, however, was not realized, with the consequence that the accidental exposure went unnoticed for a number of months.