Origin and progress of the 1968-69 Hong Kong influenza epidemic.

  title={Origin and progress of the 1968-69 Hong Kong influenza epidemic.},
  author={W. Chas Cockburn and P J Delon and W F Ferreira},
  journal={Bulletin of the World Health Organization},
  volume={41 3},
The Hong Kong strain of influenza virus A2 may have originated in the mainland of China but this is not certain. It caused a very large epidemic in Hong Kong and spread rapidly to countries as far as India and the Northern Territory of Australia-as happened in the 1957 epidemic. Later its progress slowed down but epidemics occurred in many countries in the northern hemisphere in the winter of 1968-69. In all these countries except the United States of America the disease was mild and not… CONTINUE READING

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