Illustration: Lau Ka-kuen
As Omicron upends Covid-19 vaccine targets, what will the future look like?
- Same-shot boosters or mix-and-match regimens, variant-specific or pan-coronavirus jabs – the data still unclear on the best way to prevent severe disease and death
- Given the many unknowns with Omicron, booster programmes with existing vaccines are only buying time for scientists and governments to find out more
Illustration: Lau Ka-kuen