Two groups of people need a third dose of the vaccine, according to a Saudi health expert

 Dr. Ali Ashari, consultant for the Saudi Epidemiology Unit, said that people in both groups need to take a third dose of the corona vaccine.

Those two groups of people are those who have low immunity and take impressiveness drugs.
 
Dr. Ali Ash'houri says safety is important here, not the number of doses.
 
There is a set period of time for immunization and natural immunity after infection. At the same time, mutated viruses may reduce the duration of immunity.

Dr. Ali Ashahri points out that variants of the virus may lead to a shorter duration of immunity than expected by the drug companies and the scientific conclusions announced.