wˌɛn ðə vˈaɪɹəs ɪnfˈɛkts mˈɪlk ˈænɪməlz ɪt kˈɔːzᵻz mæstˈaɪɾɪs wˌɪtʃ ɹᵻdˈuːsᵻz mˈɪlk jˈiːld ænd ðə wˈɜːkɪŋ kəpˈæsᵻɾi ʌv dɹˈæft ˈænɪməlz.
When the virus infects milk animals it causes mastitis which reduces milk yield and the working capacity of draft animals.