Table 1.
COVID-19 vaccine developer | Platform | Development stagea | Technology readiness levelb | Adequacyc | Existence of a licensed vaccine for human use using the same platform |
---|---|---|---|---|---|
Oxford/AstraZeneca | Nonreplicating viral vector | Phase II/III | TRL7 | ++++ | No |
CanSino Biological | Nonreplicating viral vector | Phase II | TRL 6/7 | ++++ | Yes |
Moderna | Nucleic acid (mRNA) | Phase II | TRL 6 /7 | +++++ | No |
Johnson & Johnson | Nonreplicating viral vector | Pre-clinical | TRL 4/5 | ++++ | No |
Pfizer/BioNTech | Nucleic acid (mRNA) | Phase I/II | TRL 6/7 | +++++ | No |
Sinovac Biotech | Inactivated virus | Phase I/II | ++ | Yes | |
Novavax | Protein sub-unit | Phase I/II | +++ | Yes | |
Inovio Pharmaceuticals | Nucleic acid (DNA) | Phase I | TRL 5/6 | ++++ | No |
Clover Biopharmaceuticals | Protein sub-unit | Phase I | TRL 5/6 | +++ | Yes |
University of Queensland | Protein sub-unit | Pre-clinical | TRL 4/5 | +++ | Yes |
Gamaleya Research Institute of Epidemiology and Microbiology | Nonreplicating viral vector | Phase I | TRL 5/6 | ++++ | No |
Sinopharm | Inactivated virus | Phase I/II | TRL 6 /7 | ++ | Yes |
Bharat Biotech | Inactivated virus | Pre-clinical | TRL 4/5 | ++ | Yes |
Source: Adapted from Fialho et al. (2022).
As of June 26, 2020 (date of the decision for the AstraZeneca partnership).
Technology Readiness Level (TRL) is an index that evaluates the progress of early-stage technological projects, ranging from 1 (still in conceptualization stage) to 9 (demonstrated usefulness).
Flexibility and versatility of the technological platform with regard to eventual adjustments to vaccine targets.