RIYADH — All unvaccinated visitors coming from countries not facing ban need to go into institutional quarantine upon their arrival in Saudi Arabia as part of measures to stop the spread of COVID-19 in the Kingdom, an official source said at the Ministry of Interior said on Monday in a statement carried by the Saudi Press Agency. The move, which will come into force on May 20 (Thursday), makes it mandatory for all unvaccinated travelers to abide by institutional quarantine procedures for a period of 7 days and obtain a valid health insurance document to cover the risks of coronavirus. The unvaccinated travelers also must undergo a PCR test for coronavirus on the first and seventh day of their arrival. The measures exempt the following categories; — Citizens, citizens' spouses, sons and daughters of citizens, and domestic workers accompanying any of the aforementioned groups. — Unvaccinated domestic workers accompanying a vaccinated resident. — Vaccinated travelers — Official delegations — Those holding diplomatic visas, diplomats and their families residing with them — Airline crew, sea crew —Truck drivers and their assistants from all ports — Those involved in health supply chains, according to the Ministry of Health. The source stressed the need for everyone to adhere to precautionary measures and preventive measures, and not to be complacent in applying health requirements.