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The effect of freeze-dried Carica papaya leaf juice treatment on NS1 and viremia levels in dengue fever mice model.
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Rapid diagnosis and determination of duration of viraemia in dengue fever using a reverse transcriptase polymerase chain reaction.
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A rapid, simple diagnostic polymerase chain reaction (PCR) method for the diagnosis of dengue fever was developed using a pair of consensus oligonucleotide primers and validated with laboratory-derived strains of dengue serotypes 1-4 and other common flaviviruses. A cluster of 13 patients with
A study of seroprevalence and rates of asymptomatic viremia of severe fever with thrombocytopenia syndrome virus among Chinese blood donors.
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BACKGROUND
Severe fever with thrombocytopenia syndrome virus (SFTSV), an emerging tick-borne pathogen that can cause fatal severe fever with thrombocytopenia syndrome, was first identified in China in 2009. Limited evidence suggests that SFTSV can be transmitted between humans via blood contact,
Relative importance of bacteremia and viremia in the course of acute fevers of unknown origin in outpatient children.
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During a 12-month period 80 children greater than 3 months of age seen at an emergency room with acute fevers greater than or equal to 39.7 C (103.5 F) and no localizing signs of infection were studied using blood and buffy coat cultures to isolate bacteria and viruses. Bacteremia was identified in
Development of a Rift Valley fever virus viremia challenge model in sheep and goats.
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Rift Valley fever virus (RVFV), a member of the family Bunyaviridae, causes severe to fatal disease in newborn ruminants, as well as abortions in pregnant animals; both preventable by vaccination. Availability of a challenge model is a pre-requisite for vaccine efficacy trials. Several modes of
Review of Crimean Congo hemorrhagic fever infection in Kosova in 2008 and 2009: prolonged viremias and virus detected in urine by PCR.
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Crimean-Congo hemorrhagic fever (CCHF) is a virus transmitted predominantly by ticks. However, contact with infected body fluids or tissues can result in animal-to-human or human-to-human transmission. Numbers of CCHF cases appear to be increasing, especially in Europe. We reviewed cases admitted to
A single amino acid substitution in the envelope protein of chimeric yellow fever-dengue 1 vaccine virus reduces neurovirulence for suckling mice and viremia/viscerotropism for monkeys.
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A chimeric yellow fever-dengue 1 (ChimeriVax-DEN1) virus was produced by the transfection of Vero cells with chimeric in vitro RNA transcripts. The cell culture supernatant was subjected to plaque purification for the identification of a vaccine candidate without mutations. Of 10 plaque-purified
Jungle yellow fever: clinical and laboratorial studies emphasizing viremia on a human case.
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The authors report the clinical, laboratorial and epidemiological aspects of a human case of jungle yellow fever. The patient suffered from fever, chills, sweating, headaches, backaches, myalgia, epigastric pains, nausea, vomiting, diarrhea and prostration. He was unvaccinated and had been working
Interruption study of viremia of patients with hemorrhagic fever with renal syndrome in the febrile phase.
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Kinetic changes of viremia were observed in 287 cases of hemorrhagic fever with renal syndrome (HFRS) in whom ribavirin was administered with double blind random control studied by means of virus isolation, indirect immunofluorescence assay and enzyme-linked immunosorbent assay. The positive rate of
Case of yellow fever vaccine--associated viscerotropic disease with prolonged viremia, robust adaptive immune responses, and polymorphisms in CCR5 and RANTES genes.
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BACKGROUND
The live attenuated yellow fever vaccine 17D (YF-17D) is one of the most effective vaccines. Despite its excellent safety record, some cases of viscerotropic adverse events develop, which are sometimes fatal. The mechanisms underlying such events remain a mystery. Here, we present an
Adenovirus causing fever, upper respiratory infection, and allograft nephritis complicated by persistent asymptomatic viremia.
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A 20-year-old woman, with renal transplant complicated by recurrence of focal segmental glomerulosclerosis and post-transplant lymphoproliferative disorder, presented nearly 2 years after transplantation with fever, conjunctivitis, and sinus congestion. She was found to have severe adenovirus
Viremia and immunogenicity in nonhuman primates of a tetravalent yellow fever-dengue chimeric vaccine: genetic reconstructions, dose adjustment, and antibody responses against wild-type dengue virus isolates.
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Chimeric yellow fever (YF)-dengue (DEN) viruses (ChimeriVax-DEN) were reconstructed to correct amino acid substitutions within the envelope genes of original constructs described by Guirakhoo et al. (2001, J. Virol. 75, 7290-7304). Viruses were analyzed and compared to the previous constructs
The duration of viremia patients with epidemic hemorrhagic fever.
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The duration of viremia in patients with epidemic hemorrhagic fever (EHF) was studied using immunofluorescence technique and cell culture assays. The duration of virus in plasma of EHF patients was about 1 week, which was concomitant with the febrile phase of the disease. Comparatively, the
A randomized, double-blind, controlled trial of the 17D yellow fever virus vaccine given in combination with immune globulin or placebo: comparative viremia and immunogenicity.
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We evaluated whether coadministration of the yellow fever (YF) virus vaccine with human immunoglobulin (Ig) that contained YF virus-neutralizing antibodies would reduce post-vaccination viremia without compromising immunogenicity and thus, potentially mitigate YF vaccine-associated adverse events.
[Interruption of early viremia in patients with epidemic hemorrhagic fever].
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Kinetic changes of viremia were observed in 287 patients with epidemic hemorrhagic fever (EHF) in whom ribavirin was administered with a double blind random controlled study by means of virus isolation, indirect immunofluorescence technique and ELISA. The positive rate of viremia was 79.7%, and the
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