A survey of the disease symptom and the observation of ultramicrostructure in infecting host-cell are reported for the epidemic penaeid baculovirus occurred in Liaoning coastal area in 1993.

• 对1993年辽宁沿海养殖对虾发生的爆发性、流行性病害，作了病情调查及病毒感染寄主细胞的超微结构观察。