Mexico's drug regulator Cofepris said on Wednesday it has no current plans to limit the use of the Oxford/AstraZeneca COVID-19 vaccine to any age or group.
The Sinovac shipment arrived with huge fanfare at Bangkok's airport, with a Chinese embassy official vowing that the vaccine export showed the "strengthened relations between China and Thailand".
More than 730,000 people, or a little over 10% of the population, have been vaccinated against COVID-19 since December with one or two doses of the vaccines available in Serbia.
The country's vaccination programme is starting months after other nations', following its provisional approval of the Pfizer product for use in January.
Prices also gained as Yemen's Iran-aligned Houthi group said it struck airports in Saudi Arabia with drones, raising supply concerns in the world's biggest oil exporter, and on optimism for a global economic recovery amid accelerated COVID-19 vaccine rollouts.
The Saudi-led coalition fighting the Houthis in Yemen said early on Monday morning it had intercepted and destroyed an explosive-laden drone fired by the Houthis toward the kingdom.
AstraZeneca has not yet filed for Japanese approval of its formula, even though its domestic trial started before Pfizer's. AstraZeneca did not immediately respond when contacted by Reuters for comment.
The European Union issued an angry warning to AstraZeneca Monday over its unexpected delay in delivering millions of doses of its Covid-19 vaccine to the bloc.