the presence of a virus in the blood stream; "viremia spread the smallpox virus to the internal organs" 同义词：viraemia,
例句与用法
1.
Viremia and extraintestinal infections in infants with rotavirus diarrhea 轮状病毒腹泻患儿病毒血症和肠道外脏器感染的研究
2.
The virus can infect the early fetus , induce immunotolerance and a lifelong persistent viremia 这种病毒可以感染胎儿，引起免疫耐受和终生持续的病毒血症。
3.
Detection of prrs virions in the main organs of the challenged animals showed that , all recombinant plasmids and the inactivated vaccine failed to prevent the occurring of viremia 而且不同的基因疫苗在诱导机体免疫应答、在机体的抗病毒作用中表现出不同的效能。
4.
Two donkeys were injected intravenously with the pd70344v stock and developed acute diseases at 9 day and 12 day after injection , respectively . one animal ( donkey 03008 ) was euthanized due to the severity of the clinical symptoms on day 17 after injection and the other donkey ( 03009 ) died on day 18 after injection . we observed high fever , weigh lost , anorexia , depression , thrombocytopenia and high plasma viremia levels during the courses 两头驴（编号03008和03009 ）分别在接种后第9天和第14天体温升高40ac以上，稽留数日，产生急性病毒血症，其中一头于发热后期实施迫杀，另一头驴在第一次发热后自然死亡，病原学和病理学检查判定为急性马传贫。
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