Table 1

Medline search strategy

Search items
1COVID-19
2SARS-CoV-2
32019-nCoV
4Coronavirus
5Or/1–4
6vaccines
7vaccination
8COVID-19 vaccine
9SARS-CoV-2 vaccine
10BNT162 vaccine
11mRNA-1273 vaccine
12COVID-19 aAPC vaccine
13INO-4800 vaccine
14LV-SMENP-DC COVID-19 vaccine
15Ad5-nCoV vaccine
16ChAdOx1 COVID-19 vaccine
17MNA SARS-CoV-2 S1 subunit vaccines
18PittCoVacc
19Inactivated novel coronavirus 2019-CoV vaccine Vero cells
20Inactivated Vaccines
21SARS-CoV-2 inactivated vaccines
22Viral Vaccines
23Gam-COVID-Vac vaccine
24Ad26.COV2.S vaccine
25EpiVacCorona vaccine
26Or/6–25
27Toxicity
28Vaccine Immunogenicity
29side effects
30adverse events
31Or/27–30
32randomized controlled trial
33double-blind method
34clinical trial
35Or/32–34
365 AND 26 AND 31 AND 35