Nowhere in the U.S. is Huanglongbing (HLB) under adequate control due to the lack of effective tools to reduce spread of the vector, Diaphorina citri (Asian citrus psyllid), and transmission of the associated pathogen, Candidatus Liberibacter asiaticus, in the absence of disease resistance in commercial citrus varieties. In Florida, Asian citrus psyllid was well established by the time of HLB discovery and growers did not remove trees to eliminate inoculum, so there was no chance of controlling the epidemic. Based on the Florida experience, Texas proactively controlled the vector by implementing area-wide management and disease spread was slower than in Florida, however, they also did not remove infected trees. California controlled both ACP and tree inoculum and have delayed the development of an epidemic in the Central Valley. This situation is aided by topographic isolation from the Los Angeles basin where ACP and HLB are endemic and a climate distinctly different from other citrus growing regions in the U.S.

中文翻译：

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佛罗里达州、加利福尼亚州和德克萨斯州的黄龙病 (HLB) 疫情状况

由于缺乏有效的工具来减少病媒 Diphorina citri（亚洲柑橘木虱）的传播以及相关病原体 Candidatus Liberibacter asiaticus 的传播，在没有疾病的情况下，黄龙病 (HLB) 在​​美国没有得到充分控制商业柑橘品种的抗性。在佛罗里达州，亚洲柑橘木虱在 HLB 发现时已经成熟，种植者没有移除树木以消除接种物，因此没有机会控制这种流行病。根据佛罗里达州的经验，德克萨斯州通过实施全区管理来主动控制病媒，疾病传播速度比佛罗里达州慢，但他们也没有移除受感染的树木。加利福尼亚州控制了 ACP 和树木接种物，并推迟了中央山谷流行病的发展。