In the third and final part of our series How Covid Changed Science, Devi Sridhar Professor of Global Health at Edinburgh University looks at the legacy and lessons of the pandemic for scientific research. Tackling the virus became a global issue, but many have pointed out the inequality of both resources and effort in the response. Going forward do we need to be directing research more towards improving health and disease surveillance in less wealthy parts of the world, would investing there help prevent future pandemics?

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