Chinese official says local vaccines 'don't have high protection rates

Chinese official says local vaccines 'don't have high protection rates'

China's top disease control official has slotxo said the efficacy of the country's Covid vaccines is low, in a rare admission of weakness.

In a press conference, Gao Fu added that China was considering mixing vaccines as a way of boosting efficacy.

China has developed four different vaccines approved for public use, though some trials abroad had suggested efficacy as low as 50%.

Mr Gao later said his comments had been misinterpreted.

More than 100 million people in China have received at least one shot of the vaccine.

Beijing insists the jabs are effective and said it will grant visas only to foreigners with a Chinese shot.

What did Mr Fu say?

Gao Fu, head of the Chinese Centres for Disease Control and Prevention, on Saturday said at a conference the current vaccines "don't have very high rates of protection".

He suggested that the China was considering mixing Covid-19 vaccines, as a way of boosting efficacy.

Mr Gao explained that steps to "optimise" the vaccine process could include changing the number of doses and the length of time. He also suggested combining different vaccines for the immunization process.

But he later appeared to backtrack on his comments, telling state media Global Times that "protection rates of all vaccines in the world are sometimes high, and sometimes low".

"How to improve their efficacy is a question that needs to be considered by scientists around the world," he told the paper.

What do we know about Chinese vaccines?

With little data released internationally, the effectiveness of the various Chinese vaccines has long been uncertain.

China's Sinovac vaccine for instance has shown in trials in Brazil to be only 50.4% effective, barely over the 50% threshold needed for regulatory approval by the World Health Organisation.

Interim results from late-stage trials in Turkey and Indonesia however, have suggested the Sinovac shot to be between 91% and 65% effective.

Western vaccines like the ones by BioNTech/Pfizer, Moderna or AstraZeneca all have an efficiency rate of around 90% or higher.