15 results found
    1. Epidemiology and Global Health

    High infectiousness immediately before COVID-19 symptom onset highlights the importance of continued contact tracing

    William S Hart et al.
    Fitting a mechanistic model to data from SARS-CoV-2 source-recipient pairs generates improved estimates of changes in infectiousness during infection, indicating substantial transmission shortly before symptom onset.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    The contribution of asymptomatic SARS-CoV-2 infections to transmission on the Diamond Princess cruise ship

    Jon C Emery et al.
    Nearly 75% of SARS-CoV-2 infections on the Diamond Princess were asymptomatic, half were never detected, and asymptomatic infections may have contributed substantially to transmission.
    1. Epidemiology and Global Health

    Evidence for transmission of COVID-19 prior to symptom onset

    Lauren C Tindale et al.
    Control of COVID-19 will require strong case finding and isolation of exposed individuals because transmission can occur days prior to symptom onset.
    1. Microbiology and Infectious Disease

    Quantifying the relationship between SARS-CoV-2 viral load and infectiousness

    Aurélien Marc et al.
    Viral dynamic modeling reveals the relationship between SARS-CoV-2 viral load and infectiousness and allows to anticipate the effects of variants of concern and of vaccination on transmission.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Heterogeneity in transmissibility and shedding SARS-CoV-2 via droplets and aerosols

    Paul Z Chen et al.
    Broader case variation in respiratory viral load, and in shedding virus via droplets and aerosols, for SARS-CoV-2 than influenza A(H1N1)pdm09 facilitates greater transmission heterogeneity in the COVID-19 pandemic than the 2009 flu pandemic.
    1. Genetics and Genomics
    2. Neuroscience

    Propensity for somatic expansion increases over the course of life in Huntington disease

    Radhia Kacher et al.
    Somatic instability of the CAG repeat increases progressively with age and disease progression in Huntington disease mutation carriers, starting with low levels in fetal brain tissues.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Virus infection of the CNS disrupts the immune-neural-synaptic axis via induction of pleiotropic gene regulation of host responses

    Olga A Maximova et al.
    Virus infection of the central nervous system disrupts the homeostasis of the immune-neural-synaptic axis via induction of pleiotropic genes with an unintended off-target negative impact on the neurotransmission.
    1. Neuroscience

    Early dysfunction and progressive degeneration of the subthalamic nucleus in mouse models of Huntington's disease

    Jeremy F Atherton et al.
    In mouse models of Huntington's disease, the subthalamic nucleus, which suppresses movements, also exhibits impaired glutamate homeostasis, NMDA receptor-dependent mitochondrial oxidant stress, firing disruption, and 30% neuronal loss.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Impact of asymptomatic Plasmodium falciparum infection on the risk of subsequent symptomatic malaria in a longitudinal cohort in Kenya

    Kelsey M Sumner et al.
    The increased risk for symptomatic malaria following an asymptomatic Plasmodium falciparum infection supports targeting asymptomatic infections as a tool to reduce clinical malaria in high-transmission settings.
    1. Epidemiology and Global Health
    2. Medicine

    Screening of healthcare workers for SARS-CoV-2 highlights the role of asymptomatic carriage in COVID-19 transmission

    Lucy Rivett et al.
    3% of >1,000 asymptomatic healthcare workers in their workplace tested positive for SARS-CoV-2, suggesting that comprehensive screening programmes are vital to prevent acquisition of COVID-19 in hospitals.

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