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呼吸道传染病流行性感冒1977年～1978年流感在全世界流行的程度较低,少部分国家为中度流行。甲型流感在1976～1977年主要流行株为甲/维多利亚/3/75[A/Victoria/3/75(H_3N_2)]及甲/得克萨斯/1/77 [A/Texas/1/77(H_3N_2)](类似甲/英格兰/864/75毒株)。前者主要分布在欧洲、北美、加拿大、中东等地;后者主要流行于美国西海岸、中非、伊拉克、南亚诸国。有的国家可同时分
Respiratory Infectious Diseases Influenza In 1977 ~ 1978, influenza prevalence in the world is low, a small number of countries are moderately popular. A / Victoria / 3/75 (H_3N_2)] and A / Texas / 1/77 [A / Texas / 1/77 (H_3N_2)] were the main influenza strains of influenza A from 1976 to 1977, ] (Similar to A / England / 864/75 strain). The former is mainly distributed in Europe, North America, Canada, the Middle East and other places; the latter is mainly popular in the west coast of the United States, Central Africa, Iraq and South Asia. Some countries can be divided at the same time