BBC News
By Tessa Wong
image captionIndonesia has been mainly using Sinovac s vaccine in its Covid immunisation programme
Across Asia, Chinese vaccines have played a crucial role in immunising people against Covid-19, with millions receiving either a Sinovac or Sinopharm jab.
But in recent weeks, concerns have grown about their efficacy. Now, some Asian countries which made Chinese vaccines a key plank in their immunisation programmes have announced they will use other jabs.
The move has raised questions, not only about whether China s vaccines can be trusted, but also about its attempts at vaccine diplomacy in Asia.
What s happening in Thailand and Indonesia?