Mamata Banerjee on Wednesday said she would be unable to travel to Rome to attend an international event on peace next month as she had taken Covaxin, which is yet to get WHO approval for emergency use listing (EUL).

“I was invited to Rome. But I am not able to visit as I have been administered two doses of Covaxin. Will the Prime Minister care to explain?” asked the chief minister.

EUL is a procedure that WHO uses to assess the safety, efficacy and risk factors associated with a vaccine. If WHO clears it, people inoculated with the home-grown vaccine can travel abroad without any restrictions.

Sources said the chief minister’s office had got to know that those administered two doses of Covaxin would have to go through a two-week quarantine on landing in Rome. They added that Mamata, who had not spoken about her vaccination till now, had raised the issue to highlight a problem faced by those vaccinated with Covaxin.