After experimental infection BDV causes a persistent infection of the central nervous system and induces Borna disease (BD), an immune-mediated encephalomyelitis.

BDV可引起中枢神经系统持续感染并导致博尔纳病(BD)，即免疫介导的脑脊髓炎。

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Pulmonary infection is one of the most often the AIDS infection, and cough is the most common symptoms, which is most persistent, recurrent, so it has became a major cause of death on AIDS patients.

呼吸道感染是艾滋病人经常发生的感染之一，咳嗽是最常见的症状，大多迁延不愈、反复发作，成为艾滋病人的重要死因。

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His new approach, coupled with a persistent bronchial infection, had Teixeira on track for career lows two months into the season.

WSJ: Teixeira Knows His Limits

It looked at 2, 061 patients who had a persistent cough lasting more than 28 days and where a chest infection, like bronchitis, was suspected.

BBC: Antibiotics 'ineffective for coughs'

Menino, who used a cane to walk to the podium, has had persistent health problems including a six-week hospital stay last year to treat a respiratory infection and a compression fracture in his spine.

NPR: Boston Mayor Announces He Won't Seek Re-Election