Table 1. Origin of the isolates and cleavage recognition motifs of the IBV strains used in this study.
| Year isolated | Strain no. | Country | Province (region) | Type of chicken | Age (days) | Material sampled | Clinical signs | Cleavage recognition motifs | GenBank accession number |
|---|---|---|---|---|---|---|---|---|---|
| 2012 | 1129 | Spain | Tarragona (Catalonia) | Broilers | n.a.a | T + CTb | n.a. | HRRRR | KU934152 |
| 2012 | 1150 | Spain | Murcia (Murcia) | Broilers | n.a. | Trachea | n.a. | HRRRR | KU934153 |
| 2012 | 1254 | Spain | Lleida (Catalonia) | Broilers | n.a. | T + CT | None. Routine sampling | HRRRR | KU934154 |
| 2012 | 1384 | Spain | Barcelona (Catalonia) | Broilers | 46 | Trachea + lungs | Respiratory | HRRRR | KU934155 |
| 2012 | 1516/1 | Spain | Tarragona (Catalonia) | Layers | n.a. | Trachea + kidneys | n.a. | HRRRR | KU934156 |
| 2012 | 1516/2 | Spain | Tarragona (Catalonia) | Layers | n.a. | Trachea + kidneys | n.a. | HRRRR | KU934157 |
| 2012 | 1516/3 | Spain | Tarragona (Catalonia) | Layers | n.a. | Trachea + kidneys | n.a. | HRRRR | KU934158 |
| 2012 | 1516/4 | Spain | Tarragona (Catalonia) | Layers | n.a. | Trachea + kidneys | n.a. | HRRRR | KU934159 |
| 2012 | 2499 | Spain | Tarragona (Catalonia) | Broilers | n.a. | Trachea + kidneys | Respiratory | HRRRR | KU934160 |
| 2012 | 2828/1 | Spain | Tarragona (Catalonia) | Broiler breeders | 90 | T + CT | n.a. | HRRRR | KU934161 |
| 2012 | 5090 | Spain | Tarragona (Catalonia) | Broilers | 14 | Kidneys | Respiratory. Nephritis | HRRRR | KU934162 |
| 2012 | 8469 | Spain | Tarragona (Catalonia) | Broilers | 42 | Kidneys | Respiratory. Nephritis | HRRKR | KU934163 |
| 2012 | 9508 | Spain | Tarragona (Catalonia) | Layers | 28 | Trachea + kidneys | Respiratory | HRRKR | KU934164 |
| 2012 | 243746 | Italy | Brescia (Lombardia) | Backyard | n.a. | Trachea + lungs | Respiratory | HRRRR | KU934179 |
| 2013 | 405 | Spain | Tarragona (Catalonia) | Layers | 61 | Kidneys + caecal tonsils | Respiratory. Nephritis. | HRRKR | KU934172 |
| 2013 | 635/1 | Spain | Tarragona (Catalonia) | Layers | n.a. | Kidneys | n.a. | HRRRR | KU934166 |
| 2013 | 1410 | Spain | Tarragona (Catalonia) | Broilers | 21 | Kidneys | Respiratory. Nephritis | HRRRR | KU934167 |
| 2013 | 1585 | Spain | Tarragona (Catalonia) | Broilers | 39 | T + CT | Respiratory | HRRRR | KU934168 |
| 2013 | 1607 | Spain | Tarragona (Catalonia) | Broilers | 34 | Caecal tonsils | n.a. | HRRRR | KU934169 |
| 2013 | 1622 | Spain | Tarragona (Catalonia) | Broilers | 18 | Kidneys + caecal tonsils | Respiratory. Nephritis. | HRRRR | KU934171 |
| 2013 | 1679 | Spain | Barcelona (Catalonia) | Boilers | 33 | Kidneys + caecal tonsils | Respiratory. Nephritis. Mortality (0.3%/day). | HRRRR | KU934170 |
| 2013 | 2010 | Spain | Tarragona (Catalonia) | Broilers | 33 | Trachea + kidneys | Respiratory & lameness | HRRRR | KU934172 |
| 2013 | 4976 | Spain | Huesca (Catalonia) | Layers | 91 | Trachea | Respiratory | HRRRR | KU934173 |
| 2013 | 10861 | Spain | Tarragona (Catalonia) | Broilers | 34 | Kidneys | Respiratory. Mortality. | HRRRR | KU934174 |
| 2013 | 20588 | Italy | Verona (Veneto) | Broilers | 42 | HRRRR | KU934180 | ||
| 2013 | 80472-2 | Italy | Brescia (Lombardia) | Layers | 280 | Trachea + oviduct | Decreased egg production | HRRKR | KU934181 |
| 2014 | 445 | Spain | Sevilla (Andalucia) | Broiler breeders | n.a. | Trachea | Respiratory | HRRRQ | KU934175 |
| 2014 | 1786 | Spain | Central Spain | Layers (pullets) | 18 | Tracheal swabs | Respiratory. Nephritis | HRRRR | KU934176 |
| 2014 | 2022 | Spain | Tarragona (Catalonia) | Broilers | 36 | Trachea + kidneys | Respiratory. Nephritis | HRRRR | KU934177 |
| 2014 | 6443-1 | Spain | Tarragona (Catalonia) | Layers | 18 | Trachea | Respiratory | HRRRR | KU934178 |
| 2014 | 8318 | Italy | Brescia (Lombardia) | Broilers | 28 | Trachea + lungs | Respiratory | HRRRR | KU934182 |
| 2014 | 14810 | Italy | Verona (Veneto) | Broilers | 23 | Trachea + lungs | Respiratory | HRRRR | KU934183 |
| 2014 | 14847 | Italy | Forlì Cesena (Emilia Romagna) | Broilers | 35 | Trachea + kidneys | Respiratory | HRRRR | KU934184 |
| 2014 | 55311 | Italy | Bologna (Emilia Romagna) | Layers | 350 | Trachea + lungs | Respiratory | HRRKR | KU934185 |
| 2014 | 90334 | Italy | Forlì Cesena (Emilia Romagna) | Broilers | 40 | Trachea | Respiratory | HRRRR | KU934186 |
| 2014 | 125490 | Italy | Mantova (Lombardia) | Layers | 364 | Trachea + lungs | Respiratory | RRSRR | KU934187 |
aNo information available.
bTrachea + caecal tonsil.