Infection

  1. Origins: Hunting the Source of Covid-19

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    Video caption: It remains one of the world's biggest mysteries: what triggered the Covid-19 pandemic?

    It remains one of the world's biggest mysteries: what triggered the Covid-19 pandemic? The BBC's global health correspondent Tulip Mazumdar delves into the main theories.

  2. Horizon Special: The Vaccine

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    Video caption: The extraordinary inside story of the vaccine scientists who took on Covid-19 - and won.

    With unique access to five vaccine teams around the globe, this is the extraordinary inside story of the unprecedented quest to develop and make vaccines to fight Covid-19.

  3. Video content

    Video caption: Bacteria makes a dengue ‘stop sign’ in mosquitoes

    Insects infected with Wolbachia bacteria are 77% less like to spread dengue fever, a trial finds.

  4. Tackling India’s black fungus crisis

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    Video caption: A rare and deadly fungal infection is affecting patients recovering from Covid in India.
  5. A Cold Case Part 1

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    Video caption: Why do we get more colds in winter?

    Why do we get more colds in winter? A viral story for Rutherford and Fry.