During persistent infections with HBV, DC's functional changes help the virus to evade innate and adaptive immunity.

HBV感染期间，DC在功能上发生了改变，HBV即通过改变DC功能逃避天然和固有免疫。

youdao

Biofilms encourage persistent infections, because the slimy films protect bacteria from antibiotics and even from attacks from the human immune system.

由于黏液状的薄膜会保护抗生素中的细菌，甚至会保护攻击人体免疫系统的细菌，所以生物膜会导致持续感染。

youdao

For the longest time, doctors suspected that the condition was caused by persistent, hidden bacterial infections and sometimes prescribed long-term or open-ended antibiotic therapy.

其中维持最长时间的治疗方法是医生怀疑是由于持续的，潜伏的细菌感染，并由此开出长期或者无限期的抗生素药方。

youdao

And because of a persistent focus on awareness, the global rate of new infections and deaths is declining.

WHITEHOUSE: President Obama on World AIDS Day