2,328 results found
    1. Medicine
    2. Microbiology and Infectious Disease

    Ct threshold values, a proxy for viral load in community SARS-CoV-2 cases, demonstrate wide variation across populations and over time

    A Sarah Walker et al.
    Wide variation in cycle threshold (Ct) values from SARS-CoV-2 RT-PCR tests over calendar time offers the potential for their broader use in public testing programmes as an ‘early-warning’ system for shifts in infectious load and hence transmission.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Viral load and contact heterogeneity predict SARS-CoV-2 transmission and super-spreading events

    Ashish Goyal et al.
    A mathematical model was used to establish a simple conceptual basis for why super-spreader events fundamentally drive the spread of SARS-CoV-2 but not influenza.
    1. Epidemiology and Global Health
    2. Evolutionary Biology

    A transmission-virulence evolutionary trade-off explains attenuation of HIV-1 in Uganda

    François Blanquart et al.
    Analysis of epidemiological data reveals that viral loads in newly HIV-1 infected individuals in Uganda have declined for two decades, and evolutionary modelling shows that attenuation of the virus explains this decline.
    1. Microbiology and Infectious Disease

    Revisiting the guidelines for ending isolation for COVID-19 patients

    Yong Dam Jeong et al.
    Compared with the approach isolating COVID-19 patients for a fixed period, the approach using repeated PCR testing mitigates unnecessarily lengthy isolation of patients while minimizing the risk of further transmission.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Early postmortem mapping of SARS-CoV-2 RNA in patients with COVID-19 and the correlation with tissue damage

    Stefanie Deinhardt-Emmer et al.
    Early postmortem autopsy of COVID-19 patients shows high viral loads and damage of the lung, although extrapulmonary cells demonstrate no injury, they contribute to inflammation, hyper-coagulation, and multiple organ dysfunction.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Interferon lambda 4 impacts the genetic diversity of hepatitis C virus

    M Azim Ansari et al.
    Interferon lambda 4, a protein part of the innate immune response, drives major amino acids selection in patients chronically infected with hepatitis C virus.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Dynamically linking influenza virus infection kinetics, lung injury, inflammation, and disease severity

    Margaret A Myers et al.
    Important nonlinear links between infection, inflammation, and disease severity were revealed using experimentally validated mathematical models.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    An integrin/MFG-E8 shuttle loads HIV-1 viral-like particles onto follicular dendritic cells in mouse lymph node

    Chung Park, John H Kehrl
    Intravital imaging with HIV-1 viral-like particle in mouse model reveals a mechanism for HIV-1 uptake by subcapsular sinus macrophages that facilitates HIV-1 spreading tofollicular dendritic and B cells.
    1. Biochemistry and Chemical Biology

    Control of cyclic oligoadenylate synthesis in a type III CRISPR system

    Christophe Rouillon et al.
    Generation of the anti-viral second messenger cyclic oligoadenylate by type III CRISPR systems is tightly controlled in response to viral RNA load and sequence.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Distinct clonal evolution of B-cells in HIV controllers with neutralizing antibody breadth

    Deniz Cizmeci et al.
    Extended somatic hypermutation and clonal evolution associated with antibody neutralization breath in HIV controllers with low plasma viral loads provide promise for HIV vaccine development.

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