KUALA LUMPUR, Jan. 4 -- Two years into the Covid-19 pandemic and with 78 per cent of the total population fully vaccinated, there was still hesitancy about booster jabs when it was first rolled out last October.

A high number of people with appointments simply did not turn up.

Many were afraid of mixing vaccines even though medical experts say there is absolutely no reason for the mistrust, especially for those who have been administered Sinovac jabs.

They say there isn't enough evidence to suggest that mixing vaccines can have an adverse effect, with the current recommendation of two doses of the Sinovac vaccine followed by a Pfizer booster shot still the most viable option to stay immunised from the SARS-CoV-2 virus.

Homologous boos...