Indonesia and Thailand are considering offering a booster shot to their medical workers immunised with Sinovac's Covid-19 vaccine, a move likely to reduce public trust in the Chinese product that has been their main inoculation tool, Reuters reports.

Some countries including Turkey and the United Arab Emirates have already started giving a booster shot to those inoculated with Chinese vaccines amid concerns that they may not be as effective against new and more transmissible coronavirus variants.

Indonesia has vaccinated millions of its healthcare workers with the Sinovac shot and thousands of them are now testing positive for Covid-19.

A leaked Thai health ministry document this week showed that the government was concerned about such a move sending a wrong signal to the public because it would be admitting that the Sinovac vaccine was not effective.

Read more here