This follows reports that some people who were not supposed to receive the vaccine had successfully made it to the list of individuals under the first phase of the programme.

In a Twitter post, Dr Khairul Hafidz said he had received many reports as well as a name list and pictures of people who had tried to beat the queue to receive the Pfizer-BioNTech vaccine.

Khairul, who is also the founder and chairman of the MedTweetMy Twitter account, which provides the public with medical information, claimed that some of the queue jumpers were local authority officers and VIPs’ maids and drivers.

“However, I respect the procedure that has been set @officialmosti, therefore we will compile and email to the email (address) provided,” he said.

Khairy has said he will investigate claims that certain groups of people had jump queues to receive the vaccine.

He said it was a serious matter and health director-general Dr Noor Hisham Abdullah had been informed.

“Whistleblowers can drop me an email, anonymously, at [email protected],” he said, in response to a posting on Twitter by Selayang Hospital nephrologist Dr Rafidah Abdullah.

Rafidah had said that certain people were able to skip the queues to be vaccinated. She said the ministry should consider an independent channel for the public to lodge complaints.