初步判断首先根据这批“不明原因”发热病人的流行特征和临床表现,作出以下判断; 一、根据此次的流行特征,初步认为该病具有明显的免疫现象。在部队发病前后,当地居民未发现或很少发现类似病人。结合病人的临床表现,可能是1种由生物因子引起的急性传染性疾病。这批病人的流行过程较长,发病单位和地点分散:从6月出现病 According to the epidemiological characteristics and clinical manifestations of these “unknown causes” of fever patients, the following preliminary judgment is made: First, according to the epidemic characteristics, the disease is preliminarily thought to have a significant immune phenomenon. Before and after the unit’s onset of disease, local residents found no or very few similar patients. Combined with the patient’s clinical manifestations, may be a biological factor caused by acute infectious diseases. The epidemiology of these patients is longer and the units and locations of the disease disperse: the disease develops from June