The chair of the National Emergency Operational Centre, Agaifili Shem Leo, said more than 10,000 people have yet to receive their second dose of the Astrazeneca vaccine.
He said this Friday, 19th November, is not a public holiday.
Agaifili said during the last lockdown at the end of September, more than 13,000 received their first shot and this mass vaccination is targeting those that did not receive their second.
The mass vaccination is between 8am-6pm.