39.下列有關鴨病毒性腸炎（鴨瘟）傳播方式之敘述，何者錯誤？
(A)在自然界最主要傳播途徑為水源
(B)實驗接種證實不會介蛋傳播
(C)病毒可躲藏在耐過鴨的三叉神經節
(D)可藉由口鼻或泄殖腔感染

補充B
Exprimentally, DVE can be transmitted via oral, intranasal, intravenous, intraperitoneal, intramuscular, and cloacal routes. Although the intramuscular route of inoculation requires the least amount of virus to kill the inoculated birds, the intranasal and conjunctival routes require more virus, and the oral route requires the most virus (93). Potential transmission by bloodsucking arthropods may be possible during viremia. Although virus has been isolated from an egg removed from the cloaca of an infected domestic duck (40), it has not been recovered from eggs laid during a naturally occurring outbreak. Experimental vertical transmission has been reported in persistently infected waterfowl (9). 

Diseases of Poultry, 13th edition, p.435