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1、假牛痘Pseudo-Cowpox (Milkers* Nodule)病因/发病机理副泡状病毒乳区、乳头的轻度感染牛群传播慢发生于下一胎次通过设备、手、清洗液、病因/发病机理副泡状病毒乳区、乳头的轻度感染牛群传播慢发生于下一胎次通过设备、手、清洗液、病因/发病机理副泡状病毒乳区、乳头的轻度感染牛群传播慢发生于下一胎次通过设备、手、清洗液、Prepared by: Dr. Terry HuntTranslated by Dr. Fu XiaopingCause & PathogenesisParapox virusMild infection of udder & teatsSlowly spre
2、ads throughout herdWill reoccur in subsequent lactations 昆虫传播Spread from infected cows by equipment, hands, washing & insects公众卫生：造成挤奶员手或指上红色/紫色发痒的结节Public Health: Causes mild itchy purple/red nodules on hands and fingers of milkerRisk FactorsJust freshened cows are most susceptible危险因素仅仅新产牛最易感Clini
3、cal FindingsClinical FindingsClinical Findings临床症状乳头/乳房上红小色丘疹，逐渐发展为水疱，最后结痂Small red papules on teats and udder progressing to vesicles then scabs马蹄形或圆环形痂Horseshoe or circular ring of scabs 一般 3 周内治愈，但可持续数月 Usually heal in 3 weeks but may persist for months断Diagnosis 特征性马蹄形或圆环形痂 Characteristic horses
4、hoe or circular ring of scabsDifferential DiagnosisBovine ulcerative mammillitisWartsTraumatic injuryCowpox -rareDifferential DiagnosisBovine ulcerative mammillitisWartsTraumatic injuryCowpox -rareDifferential DiagnosisBovine ulcerative mammillitisWartsTraumatic injuryCowpox -rare鉴别诊断牛创伤性乳头炎疣外伤性损伤牛痘
5、一少见T reatmentOintment before milkingIodophors teat dipT reatmentOintment before milkingIodophors teat dipT reatmentOintment before milkingIodophors teat dip治疗挤奶前涂药膏碘附浸泡奶头PrognosisPrognosisPrognosis预后情况预防卫生隔离发病牛 良好，乳腺炎发病率增加 Good although increased incidence of mastitisPrevention & ControlHygieneSegregate infected cows
