Table 1.
Scientific production and impact of the different COVID-19 vaccine types during 2020-2021.
| Vaccine type | TSP | CR | MCS | CS | +CR | H-index | |
|---|---|---|---|---|---|---|---|
| mRNA | Pfizer-BioNTech | 576 | 9,835 | 17.07 | 5,672 | 3,160 | 41 |
| Moderna | 210 | 6,523 | 31.06 | 4,590 | 2,052 | 26 | |
| Total | 786 | 16,358 | - | 10,262 | - | - | |
| Viral vectors | AstraZeneca | 223 | 2,002 | 8.98 | 1,538 | 285 | 18 |
| J&J Janssen | 56 | 1,118 | 19.96 | 920 | 329 | 11 | |
| Total | 279 | 3,120 | - | 2,458 | - | - | |
| Inactivated virus | Sinopharm | 20 | 23 | 1.15 | 20 | 8 | 2 |
| Covaxin-Bharat | 8 | 34 | 4.25 | 33 | 15 | 3 | |
| Sinovac | 43 | 212 | 4.93 | 195 | 110 | 7 | |
| Total | 71 | 269 | - | 250 | 133 | - | |
TSP (Total Studies Produced), CR (Citations Received), MCS (Mean Citations/Study), CS (Citing Studies), +CR (Citations received by the most cited work), H-index (Number of studies that have received the same or a higher number of citations).