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1981年1～7月,我省西部及西北部地区发生了临床上以起病急、头痛、发热、皮肤粘膜出血点、不同程度的肾脏损害以及血小板减少为主要特征的病人。调查结果表明,此次流行是以褐家鼠为主要传染源,由一种抗原性与有肾综合征出血热(HFRS)病毒相近或相同的病源引起的临床症状较轻的HFRS的流行。本次流行波及3个专区的18个县和2个市,病人主要分布在黄河流域。疫区发病率最高者为259.94/十万,最低者为0.68/十万。这些地区多为平原也有丘陵和山区。一月份出现首例病人,三、四、五月为流行高峰季节,占全部病例的67.0%。发病年龄最小11个月,最大81岁,以30岁年龄组发病率最高。男女之比为1.29:1。职业分布以农民为多,占77.7%,但因这次流行主要发生于农村,故以此难以说明职业
From January to July 1981, patients in the west and northwestern part of our country were clinically characterized by acute onset, headache, fever, mucocutaneous bleeding, varying degrees of renal damage and thrombocytopenia. The results show that the epidemic is mainly caused by Rattus norvegicus infection, the incidence of clinical symptoms of a mild HFRS epidemic caused by a similar antigenic origin and HFRS virus. The epidemic spread to three prefectures in 18 counties and 2 cities, the patients are mainly distributed in the Yellow River basin. The highest incidence of epidemic area was 259.94 / 100,000, the lowest was 0.68 / 100,000. These areas are mostly plains also have hills and mountains. The first patient appeared in January, and the peak season occurred in March, May and May, accounting for 67.0% of all cases. The youngest age of 11 months, maximum 81 years old, 30-year-old age group the highest incidence. The ratio of male to female is 1.29: 1. Occupational distribution as far as farmers, accounting for 77.7%, but mainly because of the epidemic occurred in rural areas, so it is difficult to explain the occupation