Overview of SRLV subtypes
| Subtype | Country of origin | Species | Genomic fragments used for classification | References |
|---|---|---|---|---|
| A1 | Mexico | Goats | gag (578 bp) | 2 |
| Italy | Goats | gag (800 bp) | 63 | |
| Belgium | Sheep and goats | gag-pol (1.8 kb), pol (1.2 kb) | 97 | |
| Poland | Goats | gag (625 bp), env (~400 bp) | 125 | |
| Brazil | Goats | pol (239 bp) | 68 | |
| Iceland | Sheep | gag-pol (1.8 kb), pol (1.2 kb), RT (~300bp) | 162 | |
| A2 | Mexico | Sheep | gag (578 bp) | 2 |
| China | Sheep | Whole genome | 179 | |
| Brazil | Sheep | LTR (460 bp) | 30 | |
| Turkey | Sheep | gag (800 bp) | 111 | |
| Canada | Sheep and goats | gag (1200 bp) | 159 | |
| China | Sheep | whole genome | 177 | |
| North America | Sheep | gag-pol (1.8 kb), pol (1.2 kb), RT (~300bp) | 162 | |
| A3 | Turkey | Sheep | gag (800 bp) | 111 |
| Italy | Sheep | gag-pol (800 bp) | 15 | |
| Switzerland | Sheep and goats | gag-pol (1.8 kb), pol (1.2 kb), RT (~300bp) | 162 | |
| A2/A3 | Czech Republic | Sheep and goats | gag-pol (800 bp) | 14 |
| Spain | Sheep | gag-pol (800 bp) | 52 | |
| A4 | Switzerland | Sheep and goats | gag-pol (1.8 kb), pol (1.2 kb), RT (~300bp) | 162 |
| Germany | Sheep | gag (~400 bp) | 104 | |
| A5 | Slovenia | Sheep | gag-pol (1.8 kb), pol (1.2 kb) | 80 |
| Turkey | Sheep | gag (800 bp) | 111 | |
| Italy | Goats | gag-pol (800 bp) | 15 | |
| Poland | Goats | gag (625 bp) | 118 | |
| Germany | Sheep | gag (~400 bp) | 102 | |
| Switzerland | Goats | gag-pol (1.8 kb), pol (1.2 kb), RT (~300bp) | 162 | |
| A6 | France | Sheep and goats | RT (~300 bp) | 162 |
| A7 | Switzerland | Goats | pol (1. 2 kb) | 162 |
| A8 | Italy | Goats | gag (800 bp) | 17 |
| A9 | Italy | Sheep and goats | gag-pol (800 bp) | 15 |
| Turkey | Sheep | gag (800 bp) | 111 | |
| A10 | Italy | Goats | pol (1. 2 bp) | 144 |
| A11 | Turkey | Sheep | gag (800 bp) | 111 |
| Italy | Sheep and goats | gag-pol (800 bp) | 54 | |
| Germany | Sheep | gag (~400 bp) | 102 | |
| A12 | Poland | Sheep and goats | gag (625 bp), env (610 bp) | 119 |
| A13 | Poland | Sheep | gag (625 bp), env (~400 bp) | 125 |
| A14 | Slovenia | Goats | gag-pol (1.8 kb), pol (1.2 kb) | 80 |
| A15 | Slovenia | Sheep | gag-pol (1.8 kb), pol (1.2 kb) | 80 |
| A16 | Poland | Goats | gag (625 bp), env (~400 bp) | 128 |
| Germany | Sheep | gag (~400 bp) | 102 | |
| A17 | Poland | Goats | gag (625 bp), env (~400 bp) | 128 |
| A18 | Poland | Sheep | gag (625 bp) | 128 |
| A19* | Italy | Goats | Full genome, gag-pol (800 bp) | 15, 34 |
| A20* | Italy | Sheep and goats | gag-pol (800 bp) | 15, 34 |
| A21 | Germany | Sheep | gag (~400 bp) | 102 |
| A22 | Iran | Sheep | gag (~400 bp) | 102 |
| A23 | Italy | Sheep and goats | gag-pol (800 bp) | 15 |
| A24 | Italy | Sheep | gag-pol (800 bp) | 15 |
| A25* | Poland | Sheep | gag (625 bp) | 119 |
| A26* | Poland | Sheep | gag (625 bp), env (610 bp) | 119 |
| A27 | Poland | Goats | gag (625 bp), env (610 bp) | 122 |
| B1 | Japan | Goats | gag (~529 bp) | 79 |
| Mexico | Sheep and goats | LTR (300 bp), gag (578 bp) | 2, 96 | |
| Italy | Sheep and goats | gag-pol (800 bp) | 101 | |
| Slovenia | Goats | gag-pol (1.8 kb), pol (1.2 kb) | 80 | |
| Canada | Goats | gag (1200 bp) | 159 | |
| Belgium | Goats | gag-pol (1.8 kb), pol (1.2 kb) | 97 | |
| Philippines | Goats | partial gag | 133 | |
| U.S. | Sheep and goats | gag-pol (1.8 kb), pol (1.2 kb) | 162 | |
| Brazil | Sheep and goats | env (~400bp), gag (625 bp) | 22 | |
| Poland | Goats | gag (625 bp) | 128 | |
| France | Goats | RT (~300 bp) | 162 | |
| B2 | Spain | Sheep | gag-pol (1.8 kb), pol (1.2 kb) | 57 |
| Italy | Sheep | gag-pol (800 bp) | 15 | |
| Czech Republic | Sheep | gag-pol (800 bp) | 14 | |
| Poland | Sheep and goats | gag (625 bp) | 119 | |
| Switzerland | Sheep | gag-pol (1.8 kb), pol (1.2 kb) | 162 | |
| France | Sheep and goats | RT (~300 bp) | 162 | |
| B3 | Italy | Sheep and goats | gag-pol (800 bp) | 15 |
| B4 | Canada | Goats | gag-pol (1.8 kb), pol (1.2 kb) | 90 |
| B5 | Belgium | Goats | gag-pol (1.8 kb), pol (1.2 kb) | 97 |
| C | Norway | Sheep and goats | pol (710 bp), tat-env (2.1–2.4 kp) | 55 |
| D | Switzerland | Sheep and goats | pol (1.2 kb) | 162 |
| E1 | Italy | Goats | gag-pol (800 bp) | 63 |
| E2 | Italy | Goats | gag-pol (800 bp) | 63 |