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Non-structural protein 1 (NS1) of dengue virus detection correlates with severity in primary but not in secondary dengue infection.
Journal of Clinical Virology ( IF 8.8 ) Pub Date : 2020-01-11 , DOI: 10.1016/j.jcv.2020.104259
Celia Martínez-Cuellar 1 , Dolores Lovera 1 , Fernando Galeano 1 , Luis Gatti 2 , Antonio Arbo 1
Affiliation  

BACKGROUND Non-structural protein 1 (NS1) of dengue virus circulates in the serum of patients during the acute phase of the disease. OBJECTIVES To determine whether NS1 screening can serve in diagnosing primary and secondary infection and to evaluate its utility as a marker for predicting the severity of dengue in children. STUDY DESIGN Patients ≤15 years of age hospitalized for dengue between 2012-2018, with NS1 determination (Panbio, Australia) were included. Clinical y laboratorial characteristics were collected in a standardized data table for analysis of correlation between serotypes, primary or secondary condition of infection, severity, and presence of NS1. RESULTS Of 709 children hospitalized for dengue with NS1 determination, 479 (67.5 %) had the positive test. Of the 378 primary cases, 320 (85 %) were NS1 (+). while among the 242 secondary cases only 103 (42.5 %) were NS1 (+) (p < 0001). Of the 479 patients with NS1 (+), 344 (72 %) were warnig-signed cases (WSC) and 94 (19 %) were severe cases (SC), being these figures 62 % and 34 %, in the NS1 negative patients respectively (p < 0.001). There was no difference in the frequency of WSC or SC between patients with NS1 positive or negative test in secondary dengue; however, in primary dengue, the figures were 68 % vs 32 % (p < 0.001), and 87 % vs 12 % (p < 0.001), respectively. CONCLUSIONS The presence of NS1 positive test is associated with the condition of infection (primary or secondary) and exhibited an increased risk of developing forms with warning signs or severe dengue in primary cases, but not in secondary cases.

中文翻译:

登革热病毒检测的非结构蛋白1(NS1)与主要但非继发登革热感染的严重程度相关。

背景技术在疾病的急性期,登革热病毒的非结构蛋白1(NS1)在患者血清中循环。目的确定NS1筛查是否可用于诊断原发和继发感染,并评估其作为预测儿童登革热严重程度的标志物的效用。研究设计纳入2012-2018年间登革热住院且年龄≤15岁的患者,并确定其NS1(澳大利亚Panbio)。临床实验室特征收集在标准化的数据表中,用于分析血清型,感染的主要或次要状况,严重程度和NS1的存在之间的相关性。结果在709名患登革热的儿童中,NS1的检测结果为479例(67.5%)。在378例原发病例中,有320例(85%)为NS1(+)。而在242例继发病例中,只有103例(42.5%)为NS1(+)(p <0001)。在479例NS1(+)患者中,有344例(72%)为警告征状(WSC),94例(19%)为严重病例(SC),在NS1阴性患者中分别为62%和34%分别为(p <0.001)。NS1阳性或阴性的继发登革热患者的WSC或SC频率无差异。然而,在原发登革热中,分别为68%和32%(p <0.001),以及87%和12%(p <0.001)。结论NS1阳性试验的存在与感染的状况(原发或继发)有关,在原发病例中表现出出现带有警告迹象或严重登革热的形式的风险增加,但在继发病例中则没有。在479例NS1(+)患者中,有344例(72%)为警告征状(WSC),94例(19%)为严重病例(SC),在NS1阴性患者中分别为62%和34%分别为(p <0.001)。NS1阳性或阴性的继发登革热患者的WSC或SC频率无差异。然而,在原发登革热中,分别为68%和32%(p <0.001),以及87%和12%(p <0.001)。结论NS1阳性试验的存在与感染的状况(原发或继发)有关,在原发病例中表现出出现带有警告迹象或严重登革热的形式的风险增加,但在继发病例中则没有。在479例NS1(+)患者中,有344例(72%)为警告征状(WSC),94例(19%)为严重病例(SC),在NS1阴性患者中分别为62%和34%分别为(p <0.001)。NS1阳性或阴性的继发登革热患者的WSC或SC频率无差异。然而,在原发登革热中,分别为68%和32%(p <0.001),以及87%和12%(p <0.001)。结论NS1阳性试验的存在与感染的状况(原发或继发)有关,在原发病例中表现出出现带有警告迹象或严重登革热的形式的风险增加,但在继发病例中则没有。在NS1阴性患者中分别为(p <0.001)。NS1阳性或阴性的继发登革热患者的WSC或SC频率无差异。然而,在原发登革热中,分别为68%和32%(p <0.001),以及87%和12%(p <0.001)。结论NS1阳性试验的存在与感染的状况(原发或继发)有关,在原发病例中表现出出现带有警告迹象或严重登革热的形式的风险增加,但在继发病例中则没有。在NS1阴性患者中分别为(p <0.001)。NS1阳性或阴性的继发登革热患者的WSC或SC频率无差异。然而,在原发登革热中,分别为68%和32%(p <0.001),以及87%和12%(p <0.001)。结论NS1阳性试验的存在与感染的状况(原发或继发)有关,在原发病例中表现出出现带有警告迹象或严重登革热的形式的风险增加,但在继发病例中则没有。
更新日期:2020-01-13
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