Table 3.

Table of underlying reasons associated with BioNtech selection.

	Number (%) of Participants
Reason for BioNTech selection	Primary reason	Secondary reason
Higher vaccine efficacy against COVID19	174 (87.4%)	33 (17.9%)
Vaccine passport	8 (4%)	131 (71.2%)
Offered at the HKU Community Vaccination Center at Ap Lei Chau	7 (3.5%)	102 (55.4%)
Fewer reported side effects	7 (3.5%)	41 (22.3%)
Preference for mRNA technology	0 (0%)	59 (32.1%)
Free response “KY Yuen”,”recommendation by HKU professors” “Faculty arranged for BioNTech at their center” “More wisely used by other developed countries”	2 (1%) - -	2 (1%) 1 (0.5%) 1 (0.5%)