4830 | NCT04276896, 0 | 2 | 30 | 0 | excluded | not a RCT | risk of bias not avaialble |
5419 | Levine, 0 | 0 | 13 | 0 | selection pending |
5493 | de Chaisemartin C, 2020 | 0 | 12 | 0 | selection pending |
5631 | Weng, 0 | 0 | 13 | 0 | selection pending |
6235 | NCT04648800, 0 | 0 | 0 | 0 | selection pending |
6486 | CoVEHPI (Israel), 0 | 0 | 10 | 0 | selection pending |
6729 | Shah, 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
6787 | Thompson, 2021 | 1 | 10 | 4 | | not a RCT | high risk of bias |
6788 | Waissengrin, 2021 | 0 | 13 | 0 | selection pending |
6790 | Pawlowski, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
6791 | Tande, 0 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
6857 | Anderson, 2020 | 0 | 0 | 0 | selection pending |
6894 | Andrejko, 2021 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
6927 | Rossman, 2021 | 0 | 13 | 0 | selection pending |
6931 | Yair, 2921 | 1 | 32 | 0 | | not a RCT | risk of bias not avaialble |
6934 | Boyarsky, 2021 | 1 | 32 | 0 | | not a RCT | risk of bias not avaialble |
6949 | Pawlowski, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
6966 | Ou, 2021 | 2 | 32 | 0 | excluded | not a RCT | risk of bias not avaialble |
6981 | Public Health England (Harris), 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
7001 | Boyarsky, 2021 | 1 | 32 | 0 | | not a RCT | risk of bias not avaialble |
7025 | Haberman, 2021 | 0 | 13 | 0 | selection pending |
7037 | Agur, 0 | 1 | 10 | 0 | | not a RCT | risk of bias not avaialble |
7051 | CDC Health Care Personnel, 0 | 0 | 0 | 0 | selection pending |
7052 | Aleman, 2021 | 1 | 32 | 0 | | not a RCT | risk of bias not avaialble |
7055 | Shroff, 2021 | 0 | 0 | 0 | selection pending |
7057 | CombiVacS, 2021 | 1 | 1 | 0 | | | risk of bias not avaialble |
7068 | Chappell, 2021 | 0 | 1 | 0 | selection pending |
7069 | Hillus, 2021 | 0 | 10 | 0 | selection pending |
7070 | PHE variants (Technical briefing 12 22 may 2021), 2021 | 2 | 20 | 2 | excluded | not a RCT | |
7100 | Chung, 2021 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
7325 | Skowronski, 2021 | 0 | 13 | 0 | selection pending |
7419 | Scotland delta (Sheikh), 2021 | 1 | 20 | 3 | | not a RCT | high risk of bias |
7420 | PHE (Stowe), 2021 | 2 | 13 | 3 | excluded | not a RCT | high risk of bias |
7940 | Wall, 2021 | 0 | 0 | 0 | selection pending |
7950 | Harris, 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8143 | Butt, 2021 | 1 | 20 | 2 | | not a RCT | |
8145 | Normark, 2021 | 0 | 10 | 0 | selection pending |
8147 | Canada (Nasreen), 2021 | 1 | 20 | 2 | | not a RCT | |
8149 | PHE Technical briefing 16 (11/18 June 2021), 2021 | 2 | 13 | 3 | excluded | not a RCT | high risk of bias |
8150 | Ramasamy, 2021 | 0 | 32 | 0 | selection pending |
8151 | Tsilika, 2021 | 0 | 1 | 0 | selection pending |
8161 | Meng, 2021 | 0 | 1 | 0 | selection pending |
8163 | Israel delta press release, 0 | 1 | 0 | 0 | | | risk of bias not avaialble |
8164 | Public Health England, May 16, 2021 (Bernal), 2021 | 1 | 20 | 2 | | not a RCT | |
8241 | Shu, 2021 | 0 | 1 | 0 | selection pending |
8248 | Montgomery, 2021 | 2 | 13 | 0 | excluded | not a RCT | risk of bias not avaialble |
8255 | REACT-SCOT, 2021 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
8272 | Martinez-Baz, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
8274 | REACT-1 round 13 final report (Elliott, Imperial College London), 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8275 | Musser, 2021 | 2 | 13 | 0 | excluded | not a RCT | risk of bias not avaialble |
8294 | CDC Mesa County, Colorado, 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8313 | Bahl (Fully vaccinated vs unvaccinated), 2021 | 0 | 10 | 0 | selection pending |
8320 | Mayo Clinic (Puranik), 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8333 | Qatar (Tang), 2021 | 1 | 20 | 3 | | not a RCT | high risk of bias |
8334 | Hillus, 2021 | 0 | 0 | 0 | selection pending |
8345 | Pfizer/BioNTech Booster study, 2021 | 1 | 1 | 0 | | | risk of bias not avaialble |
8350 | Rosenberg, 2021 | 2 | 13 | 0 | excluded | not a RCT | risk of bias not avaialble |
8356 | Li, 2021 | 1 | 20 | 4 | | not a RCT | high risk of bias |
8359 | Oxford (Pouwels), 2021 | 1 | 13 | 2 | | not a RCT | |
8360 | HEROES-RECOVER (Fowlkes), 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8513 | Grannis, 2021 | 1 | 20 | 3 | | not a RCT | high risk of bias |
8514 | VA (Bajema), 2021 | 1 | 20 | 3 | | not a RCT | high risk of bias |
8515 | Scobie, 2021 | 2 | 20 | 0 | excluded | not a RCT | risk of bias not avaialble |
8516 | Bar-On, 2021 | 1 | 11 | 0 | | not a RCT | risk of bias not avaialble |
9065 | Ruddy, 2021 | 2 | 32 | 0 | excluded | not a RCT | risk of bias not avaialble |
9129 | COV-BOOST, 2021 | 2 | 1 | 0 | excluded | | risk of bias not avaialble |
9130 | Gilboa, 2021 | 2 | 0 | 0 | excluded | | risk of bias not avaialble |
9132 | Arbel, 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
9170 | UKHSA report 33 (23 december 2021), 2021 | 2 | 20 | 0 | excluded | not a RCT | risk of bias not avaialble |
9173 | Sisonke 2 (booster), 2021 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
9174 | Barda, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
9175 | Patalon, 2021 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
9176 | UKHSA 31 december 2021, 2021 | 2 | 20 | 0 | excluded | not a RCT | risk of bias not avaialble |
9178 | Liu, 2021 | 2 | 1 | 0 | excluded | | risk of bias not avaialble |
9183 | Mattiuzzi, 2022 | 1 | 15 | 0 | | not a RCT | risk of bias not avaialble |
9203 | England (Andrews), 2021 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
9210 | Ontario (Buchan), 2022 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
9213 | COVI3, 2022 | 1 | 10 | 0 | | not a RCT | risk of bias not avaialble |
9214 | Southern California (Lewnard), 2022 | 2 | 13 | 0 | excluded | not a RCT | risk of bias not avaialble |
9216 | Sultan, 2022 | 0 | 12 | 0 | selection pending |
9224 | Reynolds, 2022 | 0 | 0 | 0 | selection pending |
9240 | Chen, 2021 | 2 | 1 | 0 | excluded | | risk of bias not avaialble |
9251 | Vanhoutte, 2022 | 0 | 1 | 0 | selection pending |
9256 | Nakahara, 2022 | 0 | 0 | 0 | selection pending |
9257 | Bravo, 2022 | 0 | 0 | 0 | selection pending |
9267 | Ostropolets, 2021 | 0 | 12 | 0 | selection pending |
9275 | Mattiuzzi, 2022 | 2 | 0 | 0 | excluded | | risk of bias not avaialble |
9288 | Kislaya, 2022 | 1 | 11 | 0 | | not a RCT | risk of bias not avaialble |
9290 | Danza, 2022 | 2 | 32 | 0 | excluded | not a RCT | risk of bias not avaialble |
9293 | Tenforde, 2022 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
9293 | Tenforde, 2022 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
9294 | UKHSA (report W4- 27 January), 2022 | 2 | 12 | 0 | excluded | not a RCT | risk of bias not avaialble |
9304 | Ishola (EBL3001), 2022 | 0 | 1 | 0 | selection pending |
9306 | EBOVAC2, 2021 | 0 | 1 | 0 | selection pending |
9316 | Shibli, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
9331 | McConeghy, 2022 | 1 | 10 | 0 | | not a RCT | risk of bias not avaialble |
9331 | McConeghy, 2022 | 1 | 10 | 0 | | not a RCT | risk of bias not avaialble |
9341 | EPIPHAR (ARN) DUPLICATE, 2022 | 0 | 12 | 0 | selection pending |
9409 | Thompson -VISIOn Network (omicron), 2022 | 1 | 12 | 0 | | not a RCT | risk of bias not avaialble |
9410 | Thompson -VISIOn Network (delta), 2022 | 0 | 12 | 0 | selection pending |
9411 | Accorsi, 2022 | 1 | 12 | 0 | | not a RCT | risk of bias not avaialble |
9411 | Accorsi, 2022 | 1 | 12 | 0 | | not a RCT | risk of bias not avaialble |
9415 | Patalon, 2022 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
9446 | Thuluva, 2022 | 0 | 0 | 0 | selection pending |
9450 | Shinkai, 2022 | 0 | 1 | 0 | selection pending |
9451 | Puga-G?mez, 2022 | 0 | 0 | 0 | selection pending |
9456 | Mahase, 2022 | 0 | 0 | 0 | selection pending |
9458 | Kaabi, 2022 | 0 | 0 | 0 | selection pending |
9461 | Abu-Raddad, 2022 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
9461 | Abu-Raddad, 2022 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
9478 | Lauring, 2022 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
9482 | Czajka, 2022 | 0 | 0 | 0 | selection pending |
9484 | Liu, 2022 | 0 | 0 | 0 | selection pending |
9486 | Pitisuttithum, 2022 | 0 | 1 | 0 | selection pending |
9487 | Shemer, 2021 | 1 | 11 | 0 | | not a RCT | risk of bias not avaialble |
9491 | Li X, 2022 | 1 | 12 | 0 | | not a RCT | risk of bias not avaialble |
9584 | McMurry, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
9589 | Kirsebom (UKHSA), 2022 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
9590 | UKHSA report week 12 (24 March 2022), 2022 | 1 | 12 | 0 | | not a RCT | risk of bias not avaialble |
9629 | Le Vu S. (EPI-PHARE), 2021 | 0 | 12 | 0 | selection pending |
9631 | Bozkurt, 2021 | 0 | 0 | 0 | selection pending |
10192 | Fraiman, 2022 | 0 | 0 | 0 | selection pending |