Three Sinovac doses fail to protect against Omicron in study

BEIJING (Bloomberg): Two doses and a booster of the Covid-19 vaccine made by China’s Sinovac Biotech Ltd, one of the most widely used in the world, didn’t produce sufficient levels of neutraliSing antibodies to protect against the Omicron variant, a laboratory study found.

For those who are fully immunised with the vaccine known as CoronaVac, getting a booster shot from Germany’s BioNTech SE significantly improved protective levels of antibodies against omicron, according to the study from the University of Hong Kong and The Chinese University of Hong Kong.