Antarctica was one of the last places on Earth to be affected by the virus, but on December 21, an outbreak was reported at a Chilean army base, with 36 people infected.
The AstraZeneca shots, produced by India's Serum Institute, account for most of the 35 million coronavirus vaccines administered in the country so far.
The 72-year-old Prince of Wales, who tested positive for coronavirus last year and suffered mild symptoms, had his first dose of a vaccine in February.
The suspensions have provoked intense debate over whether it was prudent to put AstraZeneca inoculations on hold just as vaccination campaigns were beginning to gather pace.
Germany, France, Italy and several other countries have temporarily paused use of AstraZeneca -- developed alongside Oxford University -- over blood clotting fears.
The European Medicines Agency (EMA), which is holding a special meeting on Thursday, echoed the WHO's calls for calm and said it was better to get the vaccine than not.
Ireland became the latest country to stop using AstraZeneca’s COVID-19 vaccine on Sunday, temporarily suspending the shot “out of an abundance of caution” after reports from Norway of serious blood clotting in some recipients there.
Denmark, Norway and Iceland have suspended the use of the vaccine over clotting issues, while Thailand became the first country outside of Europe to do so on Friday, delaying its AstraZeneca rollout over the safety concerns in Europe