Walters said that in the isolated northwest Hawaiian islands, the number of monk seals is declining by four percent every year.

沃尔特斯表示，在夏威夷西北部孤立的海岛，僧海豹数量每年都在减少4%。

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Working with veterinarians on two continents, the group isolated this virus in 71 percent of the samples from infected birds, but none of the healthy individuals.

通过在两大洲与兽医们的协作，研究小组从71 %受感染的禽鸟中提取出该病毒，而在健康正常的禽鸟中没有提取出。

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The bacteria isolated from the infected ducks were detected by the PCR assay and the positive coincidence rate comparing RA isolation with PCR was 100 percent .

以该PCR方法对可疑为鸭疫里默氏杆菌病鸭进行鉴定，结果与细菌分离鉴定吻合率为100％。

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