TABLE 1.
Species distribution frequencies per sample sourcea
| Genus (species or serovar) | No. of animal samples (n = 5,950) | No. of human samples (n = 57,464) | No. of environmental samples (n = 1,705) | Total no. | No. of genomes included in phylogenomics |
|---|---|---|---|---|---|
| Escherichia (coli, hermannii, vulneris) | 1,566 | 4,899 | 2,827 | 9,292 | 592 |
| Salmonella (Enteritidis, Paratyphi, Typhi, Typhimurium) | 500 | 1,262 | 11 | 1,773 | 487 |
| Klebsiella (pneumoniae, oxytoca, variicola, michiganensis) | 204 | 2,528 | 44 | 2,776 | 311 |
| Pseudomonas (aeruginosa, fluorescens, otitidis, putida) | 45 | 1,366 | 87 | 1,498 | 95 |
| Acinetobacter (baumannii, calcoaceticus, haemolyticus) | 2 | 611 | 92 | 705 | 21 |
| Campylobacter (coli, jejuni) | 210 | 175 | 105 | 490 | 13 |
| Citrobacter (amalonaticus, freundii, koseri, farmeri) | 1 | 133 | 6 | 140 | 192 |
| Enterobacter (aerogenes, amnigenus, cloacae, sakazakii) | 21 | 459 | 0 | 480 | 60 |
| Achromobacter xylosoxidans | 1 | 0 | 0 | 1 | 0 |
| Providencia (stuartii, rettgeri) | 1 | 48 | 6 | 55 | 132 |
| Proteus (mirabilis, vulgaris) | 0 | 394 | 53 | 447 | 159 |
| Serratia (marcescens, liquefaciens, odorifera) | 0 | 144 | 4 | 148 | 197 |
| Burkholderia spp. | 0 | 6 | 0 | 6 | 7 |
| Vibrio cholerae | 0 | 24 | 279 | 303 | 180 |
| Morganella (morganii) | 0 | 31 | 19 | 50 | 85 |
| Neisseria (meningitidis, gonorrhoeae) | 0 | 207 | 0 | 207 | 199 |
| Bordetella (bronchiseptica) | 0 | 1 | 2 | 3 | 21 |
| Alcaligenes faecalis | 0 | 3 | 47 | 50 | 0 |
| Stenotrophomonas (maltophilia) | 0 | 5 | 126 | 131 | 6 |
| Leclercia adecarboxylata | 0 | 1 | 0 | 1 | 0 |
| Pantoea (dispersa, agglomerans) | 0 | 2 | 1 | 3 | 21 |
| Mycoplasma genitalium | 0 | 266 | 0 | 266 | 23 |
| Raoultella | 0 | 3 | 0 | 3 | 0 |
| Aeromonas | 0 | 0 | 11 | 11 | 3 |
| Bacillus | 0 | 0 | 97 | 97 | 96 |
| Brevundimonas | 0 | 0 | 3 | 3 | 120 |
| Chromobacterium | 0 | 0 | 6 | 6 | 0 |
| Myroides | 0 | 0 | 2 | 2 | 0 |
| Psychrobacter | 0 | 0 | 3 | 3 | 0 |
| Trabulsiella | 0 | 0 | 1 | 1 | 8 |
| Total | 2,551 | 12,568 | 3,832 | 18,951 | 3,028 |
a
Discrepancies between total isolates in Table 1 and total isolates under Results arise from the fact that not all isolates in every study were Gram-negative isolates, i.e., some studies described resistance in both Gram-negative and Gram-positive bacteria. Non-Gram-negative isolates are not included in Table 1.