Table 5.
Most frequent index keywords per cluster.
| Red Cluster | Green Cluster | |||||
| No | Keyword | Occurrences | TLS | Keyword | Occurrences | TLS |
| 1st | climate change | 116 | 1387 | Africa | 12 | 164 |
| 2nd | Zoonosis | 93 | 1158 | animal health | 12 | 173 |
| 3rd | Article | 50 | 571 | Asia | 10 | 144 |
| 4th | public health | 47 | 639 | deforestation | 10 | 164 |
| 5th | disease transmission | 44 | 610 | disease vectors | 14 | 216 |
| 6th | priority journal | 41 | 537 | domestic animal | 14 | 231 |
| 7th | disease carrier | 34 | 488 | epidemiology | 12 | 168 |
| 8th | risk assessment | 22 | 296 | Europe | 15 | 217 |
| 9th | Ecosystem | 20 | 285 | geographic distribution | 29 | 411 |
| 10th | Ecology | 18 | 280 | global change | 10 | 151 |
| Blue Cluster | Yellow Cluster | |||||
| No | Keyword | Occurrences | TLS | Keyword | Occurrences | TLS |
| 1st | Animals | 107 | 1315 | Human | 125 | 1501 |
| 2nd | non-human | 95 | 1249 | Review | 71 | 917 |
| 3rd | Parasitology | 23 | 332 | risk factor | 27 | 384 |
| 4th | Transmission | 23 | 327 | Epidemic | 25 | 346 |
| 5th | Isolation and purification | 18 | 247 | infection control | 22 | 293 |
| 6th | Microbiology | 17 | 226 | Wildlife | 20 | 317 |
| 7th | Virology | 17 | 233 | communicable diseases, emerging | 18 | 265 |
| 8th | disease surveillance | 15 | 213 | environmental factor | 18 | 266 |
| 9th | animals, wild | 14 | 233 | Incidence | 17 | 233 |
| 10th | Physiology | 14 | 180 | communicable disease | 16 | 202 |
TLS—Total link strength.