The city’s government said the suspension was immediate while the matter is investigated by distributor Fosun Pharma and BioNTech, the German company which created the vaccine with American pharmaceutical firm Pfizer.
BioNTech and Fosun Pharma have not found any reason to believe the product is unsafe, according to the statement. However, vaccinations will be halted as a preventive and safety measure.
The defective lids were found on vaccines from batch number 210102. A separate batch of vaccines, 210104, will also be not be administered.
Macao also said Wednesday that residents would not receive the Pfizer vaccinations from the affected batch.
BioNTech and Fosun Pharma could not be immediately reached for comment.
All community centres in Hong Kong administering the Pfizer vaccine have temporarily suspended vaccinations and residents who already made appointments for Wednesday need not proceed to the centres, the government said.
The suspension of the Pfizer jab means the only vaccine currently offered to residents is China’s Sinovac vaccine. The two vaccines are the only ones that were offered to residents in Hong Kong.
German expatriate Jannis Partsafas was among a group of people who received the Pfizer shot ahead of the suspension.
“I got vaccinated this morning at 8.30 a.m. before the news went public about the vaccine suspension, and heard the news when I was on my way home,” said 32-year-old Partsafas, who works in the sporting goods industry.
“I’m not very concerned about the safety, but I am worried that this may mean more people will turn down the option of getting vaccinated in Hong Kong which would impact herd immunity and the lifting of social-distancing measures,” he said.
Some residents who had appointments Wednesday morning stood in line outside a community centre administering the Pfizer vaccinations in the city’s Sai Ying Pun neighbourhood at about 10.30 a.m. They eventually left the centre when it became apparent that no vaccines would be administered.
As of 8 p.m. Tuesday, 403,000 people have received vaccines in the city, of which 150,200 had received the first dose of the Pfizer vaccine, compared with 252,800 who had taken the Sinovac jab.
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