研究报告的作者认为二手烟可能影响免疫系统。这使得出生不久的婴儿、刚学会走路的婴儿及低龄儿童更容易受各类传染病的影响。
The study authors speculate that secondhand smoke may affect the immune system, making infants, toddlers and young children more susceptible to infections of all kinds.
对于婴儿，儿童及免疫力低下的人群，传染给别人的可能性甚至更久。
Infants, young children and immunocompromised people may be infectious for even longer.
目的了解深圳地区人类免疫缺陷病毒1型（HIV-1）毒株亚型及流行情况，分析其传染来源和传播规律。
Objective To study the epidemic status of human immunodeficiency virus type 1(HIV-1)subtypes in Shenzhen and to study their transmission source and routes.
欧蒙公司开发、生产供医学实验室使用的自身免疫、传染病及过敏源等疾病的诊断试剂。
EUROIMMUN develops and produces medical laboratory reagents which are used in the diagnosis of autoimmune and infectious diseases as well as allergies.
该病毒传染性强，而且感染机体后导致免疫抑制及各种并发症，给养猪业造成巨大危害和经济损失。
For its infectiousness as well as the immune repression and intercurrent brought to pigs, PRRSV caused huge economic loss to pig's feeding industry.
该病毒传染性强，而且感染机体后导致免疫抑制及各种并发症，给养猪业造成巨大危害和经济损失。
For its infectiousness as well as the immune repression and intercurrent brought to pigs, PRRSV caused huge economic loss to pig's feeding industry.
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