King D J
U.S. Department of Agriculture, Southeast Poultry Research Laboratory, Athens, Georgia 30605.
Avian Dis. 1988 Apr-Jun;32(2):362-4.
Three 1986 infectious bronchitis virus (IBV) isolates were serotyped by a hemagglutination-inhibition method and were found to be serologically different from the seven strains currently used in regular and specially licensed vaccines in the United States (Mass 41, H52, H120, Conn 46, Fla 18288, JMK, and Ark 99) and from 13 other reference IBV strains. The recent isolates were from layer flocks that had histories of egg-production declines and shell-quality problems. Two of the isolates, one each from Maine and Ohio, were serologically related to a 1983 IBV isolate from layer replacements in Pennsylvania. The third isolate, from Korea, was serologically different from any of the reference strains and the other new isolates.
通过血凝抑制法对1986年分离出的三株传染性支气管炎病毒（IBV）进行血清分型，发现它们与美国目前常规和特殊许可疫苗中使用的七株毒株（Mass 41、H52、H120、Conn 46、Fla 18288、JMK和Ark 99）以及其他13株IBV参考毒株在血清学上存在差异。这些近期分离出的毒株来自有产蛋量下降和蛋壳质量问题历史的蛋鸡群。其中两株毒株，一株来自缅因州，一株来自俄亥俄州，在血清学上与1983年从宾夕法尼亚州蛋鸡替代群中分离出的一株IBV毒株相关。第三株毒株来自韩国，在血清学上与任何参考毒株及其他新分离出的毒株都不同。
