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Influenza – History of Medicine

By |2018-04-25T17:10:21+00:00September 6th, 2017|Science|

Clay hen whistle from Mohenjo Daro (ca. 2700 BC, now in Brooklyn Museum) Influenza is a virus that mostly infects birds - like chickens - and pigs. But influenza can also attack people. Probably people started to get influenza around the time they started keeping chickens and living in cities - in China and India, about 3000 BC, in Greece about 500 BC, and in North [...]

What is a virus? Evolution and biology

By |2017-05-30T10:58:32+00:00May 30th, 2017|Biology|

The virus that causes AIDS (greatly magnified) HIV image copyright Russell Knightley Nobody is quite sure whether viruses are living things or not. The first living things may have come from viruses. But it's also possible that viruses evolved from living cells and got gradually less complex and more dependent on their hosts to live. [...]