Saudi Arabia’s National Scientific Committee for Infectious Diseases has decided that one COVID-19 vaccine dose should be sufficient for those who have previously been infected with the coronavirus, the Ministry of Health reported on Thursday.

The dose would be given six months after their recovery from the coronavirus, and would be considered a “booster for their immunity,” the health ministry said.

Saudi Arabia’s Ministry of Health announced on Thursday the launch of the second phase of the COVID-19 vaccination campaign across all regions of the Kingdom, adding that those wishing to take the vaccine can book an appointment through the Sehhaty app.

The second stage of the Kingdom’s coronavirus vaccination campaign targets citizens and residents over 50 years, and health practitioners. It also targets those with one of the following chronic diseases: asthma, diabetes, chronic kidney disease, chronic heart disease, including coronary artery disease, and chronic obstructive pulmonary disease, active cancer, and those with obesity and a Body Mass Index (BMI) between 30-40.