As the virus which causes Covid-19 becomes more transmissible, China has poured resources into repeated rounds of mass PCR testing. Photo: AFP
As the virus which causes Covid-19 becomes more transmissible, China has poured resources into repeated rounds of mass PCR testing. Photo: AFP
Josephine Ma
Opinion

Opinion

As I see it by Josephine Ma

Omicron sub-variants latest challenge for China’s zero-Covid policy

  • BA.4 and BA.5 appear to have a greater ability to escape the protections of vaccination and previous Omicron-caused infections
  • Scientists say the sub-variants could be more contagious but there is so far no evidence they cause more severe illness

As the virus which causes Covid-19 becomes more transmissible, China has poured resources into repeated rounds of mass PCR testing. Photo: AFP
As the virus which causes Covid-19 becomes more transmissible, China has poured resources into repeated rounds of mass PCR testing. Photo: AFP
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