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Omicron May Cut Delta Infections, South African Study Shows

  • Findings suggest the country’s fourth wave is obscuring delta
  • Omicron is fast becoming dominant coronavirus strain globally
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WATCH: As the Omicron variant alarms the world and prompts travel restrictions, Khuleko Siwele reports scenes of calm in Johannesburg, South Africa.Source: Bloomberg
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Infection with the omicron coronavirus variant can also strengthen immunity against the earlier delta strain, reducing the risk of severe disease, according to a paper released by South African scientists. 

While omicron has been shown to be highly transmissible and can evade some antibodies, after two weeks of getting symptoms immunity to subsequent infections from the strain rose 14-fold, according to the authors led by Alex Sigal and Khadija Khan of the Durban, South Africa-based Africa Health Research Institute. A smaller improvement was found against delta, they said.