It is a great irony that while the United States blames China for the coronavirus and tries to play up the lab leak theory, it has refused to allow investigations into its biowarfare activities which potentially pose a danger to the world, wrote a senior editor with the South African news and information website Independent Online (IOL).

　　Shannon Ebrahim, group foreign editor for Independent Media which own the IOL, said in an opinion article recently that the World Health Organization (WHO) released a joint WHO-China study on the origins of COVID-19, which found that a leak from the Wuhan laboratory was highly unlikely.