Understanding the behaviour of the virus will help scientists develop a vaccine. Photo: Xinhua

Coronavirus still stumps experts on when human carrier turns infectious

  • Identifying how long it takes before carriers start to spread the virus could prove key to curbing the spread of Covid-19
  • Researchers are trying to determine whether it can be transmitted before carriers start to show symptoms
Topic |   Coronavirus pandemic
Understanding the behaviour of the virus will help scientists develop a vaccine. Photo: Xinhua
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