In Singapore, the experience has been that +98% of COVID cases have little or no symptoms, 1% need oxygen and 0.2% in the ICU. Most of those needing oxygen or ICU are over 60 years old. Almost all deaths have been unvaccinated senior citizens with underlying health problems.
As of yesterday 83% of the population are vaccinated, booster shots are being offered to those who were jabbed 6+ months ago.