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Observation | Clinical Science and EpidemiologyEffectiveness of Face Masks in Preventing Airborne Transmission of SARS-CoV-2Airborne simulation experiments showed that cotton masks, surgical masks, and N95 masks provide some protection from the transmission of infective SARS-CoV-2 droplets/aerosols; however, medical masks (surgical masks and even N95 masks) could not completely block the transmission of virus droplets/aerosols even when sealed.
Editor's Pick Commentary | Molecular Biology and PhysiologyLessons from Microbes: What Can We Learn about Equity from Unculturable Bacteria?Many microbiologists exhibit a fascination with unculturable bacteria. This intrigue can be expressed through curiosity about nutrient needs, as well as about parameters such as optimal temperature, oxygen levels, minimum and optimal light, or other such environmental factors. Microbiologists study organisms’ genetic language, as well as their environment of origin, for clues about essential factors or organisms’ need for coculture to...
Perspective | Clinical Science and EpidemiologyThe Social Distancing Imposed To Contain COVID-19 Can Affect Our Microbiome: a Double-Edged Sword in Human HealthHygienic measures imposed to control the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and contain COVID-19 have proven effective in controlling the pandemic. In this article, we argue that these measures could impact the human microbiome in two different and disparate ways, acting as a double-edged sword in human health. New lines of research have shown that the diversity of human intestinal and oropharyngeal...
Editor's Pick Commentary | Host-Microbe BiologyCOVID-19: Knowns, Unknowns, and QuestionsThe recent emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from the Hubei province in China in late 2019 demonstrates the epidemic potential of coronaviruses. The rapid spread of this virus across the world in only 2 months highlights the transmissibility of this family of viruses and the significant morbidity and mortality that they can cause. We highlight the current state of knowledge of coronavirus biology...
Editor's Pick Observation | Applied and Environmental ScienceIncreasing Temperature and Relative Humidity Accelerates Inactivation of SARS-CoV-2 on SurfacesMitigating the transmission of SARS-CoV-2 in clinical settings and public spaces is critically important to reduce the number of COVID-19 cases while effective vaccines and therapeutics are under development. SARS-CoV-2 transmission is thought to primarily occur through direct person-to-person transfer of infectious respiratory droplets or through aerosol-generating medical procedures. However, contact with contaminated surfaces may...
Research Article | Clinical Science and EpidemiologyDescriptive, Retrospective Study of the Clinical Characteristics of Asymptomatic COVID-19 PatientsAsymptomatic transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a potential problem for pandemic control through public health strategies. Our results demonstrate that asymptomatic COVID-19 patients have better outcomes than symptomatic patients. This may have been due to more active cellular immune responses and normal liver function. Since asymptomatic patients have no clinical symptoms which can easily...
Opinion/Hypothesis | Molecular Biology and PhysiologyCOVID-19 Hyperinflammation: What about Neutrophils?COVID-19 is often related to hyperinflammation that drives lung or multiorgan injury. The immunopathological mechanisms that cause excessive inflammation are under investigation and constantly updated. Here, a gene network approach was used on recently published data sets to identify possible COVID-19 inflammatory mechanisms and bioactive genes. First, network analysis of putative SARS-CoV-2 cellular receptors led to the mining of a...
Editor's Pick Commentary | Clinical Science and EpidemiologymSphere of Influence: That’s Racist—COVID-19, Biological Determinism, and the Limits of HypothesesKishana Taylor works in the field of virology. In this mSphere of Influence article, she reflects on the personal impact of “Racial health disparities and COVID-19 – caution and context” by Merlin Chowkwanyun and Adolph L. Reed, Jr. (N Engl J Med 383:201–203, 2020, https://doi.org/10.1056/NEJMp2012910) and “A hypothesis is a liability” by Itai Yanai and Martin Lercher (Genome Biol 21:...
Editor's Pick Research Article | Host-Microbe BiologyDistinct Fecal and Plasma Metabolites in Children with Autism Spectrum Disorders and Their Modulation after Microbiota Transfer TherapyDespite the prevalence of autism and its extensive impact on our society, no U.S. Food and Drug Administration-approved treatment is available for this complex neurobiological disorder. Based on mounting evidences that support a link between autism and the gut microbiome, we previously performed a pioneering open-label clinical trial using intensive fecal microbiota transplant. The therapy significantly improved gastrointestinal and...
Research Article | Host-Microbe BiologyThe Initial Gut Microbiota and Response to Antibiotic Perturbation Influence Clostridioides difficile Clearance in MiceClostridioides difficile is a leading nosocomial infection. Although perturbation to the gut microbiota is an established risk, there is variation in who becomes asymptomatically colonized, develops an infection, or has adverse infection outcomes. Mouse models of C. difficile infection (CDI) are...