We have found one new study comparing convalescent plasma with standard care (Koerper et al. medRxiv doi: 10.1101/2021.05.10.21256192).
We have found two new studies comparing tocilizumab with standard care (Rutgers et al. SSRN doi: 10.2139/ssrn.3834311 and Talaschian et al. Res Sq doi: 10.21203/rs.3.rs-463921/v1).
Note: The newly identified trials listed above are currently under review and although not expected to change the recommendations, will be incorporated in a future version of the guidelines.