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Poultry Virology
Detection of Chinese Q1 strain of infectious bronchitis virus in Europe
  1. A. Toffan1,
  2. C. Terregino1,
  3. E. Mazzacan1,
  4. I. Castaldello1,
  5. I. Capua1 and
  6. M. Bonci2
  1. OIE/FAO Reference Laboratory for Avian Influenza and Newcastle Disease, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università 10, 35020 Legnaro (PD), Italy
  2. Peripheral Diagnostic Laboratory, Istituto Zooprofilattico Sperimentale delle Venezie, Treviso, Italy
  1. e-mail: atoffan{at}

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INFECTIOUS bronchitis (IB) is a ubiquitous and highly contagious viral infection affecting chickens of all ages, which is known to cause severe economic losses to the industry. The viral agent is a coronavirus, a single-stranded RNA virus characterised by a well-documented capacity to modify its genome by both spontaneous mutation and genetic recombination.

At the end of July 2011, samples from 15-day-old broilers from a farm located in north-east Italy were submitted to our laboratory for investigation. The birds had been vaccinated against IB (with the H120 strain …

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