Infection is usually transient, lasting 8-18 weeks. <ref>Skirrow, S.Z., BonDurant, R.H. (1990) '''Induced Tritrichomonas foetus infection in beef heifers.''' J Am Vet Med Assoc, 196(6):885-889; 25</ref> | Infection is usually transient, lasting 8-18 weeks. <ref>Skirrow, S.Z., BonDurant, R.H. (1990) '''Induced Tritrichomonas foetus infection in beef heifers.''' J Am Vet Med Assoc, 196(6):885-889; 25</ref> |