【明報專訊】Today (May 26) marks exactly three months since Hong Kong's COVID-19 vaccination programme began, but the vaccination rate has still not reached 20%. In terms of the building of the wall of herd immunity, there is still a long way to go. Outbreaks are worsening in neighbouring regions such as Taiwan and Japan. If Hong Kong is to return to normal, its inoculation drive must be stepped up in the coming months.