2021-04-16 09:35:59 GMT2021-04-16 17:35:59(Beijing Time) Xinhua English SUVA, April 16 (Xinhua) -- More than 500 people, mostly frontline workers and those vulnerable to the virus, on Friday have received the AstraZeneca vaccine in Tonga, a Pacific island nation with a population of more than 100,000. According to Matangi, Tonga's leading news website on Friday, the vaccination program started on Thursday with Tonga's Princess Pilolevu Tuita receiving the first dose, along with the nation's Prime Minister Pohiva Tu'i'onetoa, and cabinet ministers. The vaccinated people included health, police, defence and officials at Tonga's ports and airports. The prime minister said on Friday that there had been no cases of major adverse effects nor any hospitalizations from those that have been vaccinated so far.