Hong Kong and Macau have suspended the use of Pfizer/BioNTech’s coronavirus vaccine after being informed of a packaging problem affecting one batch of vials.
Although officials stressed that they did not believe there was a safety risk, the stoppage is the latest blow in efforts to roll out mass vaccination programmes against a virus that has killed more than 2.7 million people around the world.
“For the sake of precaution, the current vaccination must be suspended during the period of investigation,” Hong Kong’s government said in a statement.
It comes a day after health authorities banned a local clinic from supplying vaccines after one of its doctors publicly said he would choose Pfizer’s vaccine over Sinovac.
Both Chinese cities said their decision came after they were contacted about the packaging issue by Fosun, the Chinese pharmaceutical company that is distributing the Pfizer/BioNTech vaccine in China.
Vials with the lot number 210102 were found to have defective packaging, authorities said.
The statements from Hong Kong and Macau did not give any details on how the packaging was defective but both said they did not believe there were any safety issues. Authorities said they decided to act out of an abundance of caution until their investigation is concluded.
Some Hongkongers said on social media their appointments that day had been cancelled and that some vaccination centres were closed. “I haven’t lost confidence in the vaccine but I’m quite disappointed as I took the day off,” one man, who gave his surname as Wong, told AFP as he arrived at a taped-off centre.
Vaccines with the lot number 210102 have already been given to members of the public in Hong Kong.
Authorities said another batch of vaccines with lot number 210104 would be put to one side until the investigation had concluded.
Despite being a densely populated city, Hong Kong has kept infections low thanks to some of the most stringent quarantine measures in the world, recording just 11,000 infections and 200 deaths since the pandemic began.
Hong Kong began its vaccination drive last month but the public take-up has been slow and ensnared by roiling political unrest.
The city was upended by huge and often violent democracy protests in 2019 that Beijing has responded to with a sweeping crackdown on dissent.
As a result, public trust in Hong Kong’s government is low. A recent poll said only 37% of Hong Kong adults planned to get vaccinated.
Around 403,000 people – about 5% of the city’s population – have had their first shot. Until Wednesday, authorities offered China’s Sinovac and the Pfizer/BioNTech vaccine.
Sinovac received fast-track approval despite not publishing peer-reviewed clinical data. Data points to an efficacy rate of 50-80%, depending on the studies. Pfizer says its efficacy rate is 94-95%.
The vaccination scheme was opened to anyone above the age of 30 last week after officials struggled to attract enough elderly people and those in priority groups.
Hong Kong leader Carrie Lam has previously lamented the tepid enthusiasm for vaccination and accused critics of “smearing” the Chinese vaccine.
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