Hong Kong has warned it could have to throw away vast stores of coronavirus vaccines because of people's reluctance to have a jab.
The territory currently has around two million Pfizer shots that will be out of date in three months.
Less than 20% of people have had a jab.
"They cannot be used after the expiry date and the community vaccination centres for BioNTech will, according to present plans, cease operating after September," Thomas Tsang, a former controller of the Centre for Health Protection, told RTHK radio.
New doses were not likely to be delivered before the end of the year, he added.
Hong Kong - population 7.5 million - bought 7.5 million doses each of the Pfizer-BioNTech vaccine and China's Sinovac. Despite this, just 14% of Hong Kongers have received two doses.Even, the territory's medical sector has been slow to take up vaccines.