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Kat Lay

Kat Lay is the Guardian's global health correspondent

October 2024

  • Portrait of Prof Kelly Chibale

    ‘People didn’t believe Africa could be a source of innovation’: how the continent holds the key to future drug research

  • A pest control worker fumigates a street with insecticides in Jakarta in May 2024 to try to wipe out the mosquitoes that spread dengue fever.

    Dengue fever: with a record 12.4m cases in 2024 so far, what is driving the world’s largest outbreak?

  • A doctor places a stethoscope on the back of a small boy

    A common condition
    Millions of teenagers in Africa have undiagnosed asthma – study

  • A scientist holding a container of mosquitos

    Europe’s medical schools to give more training on diseases linked to climate crisis

  • One in eight girls sexually assaulted or raped before turning 18, says Unicef

  • Fair Access
    ‘Gamechanger’ HIV prevention drug to be made available cheaply in 120 countries

September 2024

  • An African-Caribbean woman talks at a press conference while sitting at a desk on stage with two other women and a man

    World leaders declare target of 10% reduction in superbug deaths by 2030

  • A hand holding a leaflet in front of women sitting in a row

    Race to combat mpox misinformation as vaccine rollout in DRC begins

  • A man seen from above, eating a bowl of instant noodles at a rough table covered with sackcloth

    A common condition
    Time for a noodle tax? Doctor who sounded alarm on ultra-processed food urges tougher action

  • A collection of colourful pills

    Drug-resistant infections are on the rise – so why aren’t we getting any new antibiotics?

  • Superbugs ‘could kill 39m people by 2050’ amid rising drug resistance

  • DRC receives first donation of 100,000 mpox vaccines to contain outbreak

August 2024

  • This image provided by the National Institute of Allergy and Infectious Diseases shows a colorized transmission electron micrograph of monkeypox particles (red) found within an infected cell (blue)

    What is mpox and why has it been declared a global health emergency?

  • A health worker in a mask and surgical scrubs, holding small boxes of medicine, walks past plastic-betted fences and a corrugated iron roofed building in Africa

    Failure to deal with mpox outbreak ‘is risk not just to Africa but whole world’

  • African woman with suspected mpox, face not visible but small raised lumps can be seen on her upper right arm.

    Mpox screening stepped up globally as more cases emerge outside Africa

  • FINLAND-US-RUSSIA-POLITICS-DIPLOMACY-SUMMIT-DEMONSTRATION<br>A protester of the #ResistGag movement holds asign reading "If Trump got pregnant there wouldn't be a gag rule" during a protest at the Senate square in Helsinki, Finland on July 16, 2018, to support women's rights ahead of the meeting between US President and his Russian counterpart. (Photo by Alessandro RAMPAZZO / AFP) (Photo credit should read ALESSANDRO RAMPAZZO/AFP/Getty Images)

    Global health charities warn of ‘huge and terrible’ threat to abortion rights if Trump returns

  • Mpox outbreak in Africa is public health emergency, declares WHO

  • Russian influence in eastern Europe is aggravating HIV epidemic, say experts

  • ‘I lost my son to sepsis’: the fightback against the spread of superbugs

  • Outbreak of Oropouche virus in Brazil should be a ‘wake-up call’, say experts

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