6,161 results match your criteria Pharyngoconjunctival Fever


Morbidity burden, seasonality and factors associated with the human respiratory syncytial virus, human parainfluenza virus, and human adenovirus infections in Kenya.

IJID Reg 2021 Dec 9;1:72-78. Epub 2021 Oct 9.

Centre for Virus Research, Kenya Medical Research Institute, Nairobi, Kenya.

Background: Human respiratory syncytial viruses (HRSV), human parainfluenza viruses (HPIV), and human adenoviruses (HAdVs) cause a substantial morbidity burden globally.

Objective: We sought to estimate morbidity burden, assess seasonality, and determine factors associated with these respiratory viruses in Kenya.

Methods: The data were obtained from Kenyan sites included in the Köppen-Geiger climate classification system. Read More

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December 2021

Differential Biodistribution of Adenoviral-Vectored Vaccine Following Intranasal and Endotracheal Deliveries Leads to Different Immune Outcomes.

Front Immunol 2022 10;13:860399. Epub 2022 Jun 10.

McMaster Immunology Research Centre, M. G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada.

Infectious diseases of the respiratory tract are one of the top causes of global morbidity and mortality with lower respiratory tract infections being the fourth leading cause of death. The respiratory mucosal (RM) route of vaccine delivery represents a promising strategy against respiratory infections. Although both intranasal and inhaled aerosol methods have been established for human application, there is a considerable knowledge gap in the relationship of vaccine biodistribution to immune efficacy in the lung. Read More

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NK Cell Subset Redistribution and Antibody Dependent Activation after Ebola Vaccination in Africans.

Vaccines (Basel) 2022 May 31;10(6). Epub 2022 May 31.

Department of Infection Biology, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK.

Natural killer cells play an important role in the control of viral infections both by regulating acquired immune responses and as potent innate or antibody-mediated cytotoxic effector cells. NK cells have been implicated in control of Ebola virus infections and our previous studies in European trial participants have demonstrated durable activation, proliferation and antibody-dependent NK cell activation after heterologous two-dose Ebola vaccination with adenovirus type 26.ZEBOV followed by modified vaccinia Ankara-BN-Filo. Read More

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A dopamine antagonist, domperidone enhances the replication of an oncolytic adenovirus in human tumour cells.

J Gen Virol 2022 Jun;103(6)

Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan.

Oncolytic adenoviruses (OAds) have attracted much attention as novel anticancer agents. Numerous studies have examined the antitumour effects of combinational use of an OAd and anticancer agents; however, few chemical compounds enhancing OAd infection have been reported. In this study, we screened a food and drug administration (FDA)-approved drug library containing 1134 small chemical compounds to identify chemical compounds that enhance OAd replication in human tumour cells. Read More

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Current status of human adenovirus infection in China.

World J Pediatr 2022 Jun 18. Epub 2022 Jun 18.

NHC Key Laboratory of Medical Virology and Viral Diseases, WHO WPRO Regional Reference Laboratory of Measles and Rubella, Chinese Center for Disease Control and Prevention, Measles Laboratory in National Institute for Viral Disease Control and Prevention, 155# Changbai Road, Changping District, Beijing, 102206, China.

Background: Outbreaks of severe, acute hepatitis among children have recently attracted global attention. The pathogen causing the outbreak remains unknown, but there is growing evidence that it may be associated with human adenovirus (HAdV).

Data Sources: A review of adenovirus-related clinical studies, epidemiological studies, etiological studies, and case reports was conducted by reviewers independently. Read More

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Validation of a Classification Model Using Complete Blood Count to Predict Severe Human Adenovirus Lower Respiratory Tract Infections in Pediatric Cases.

Front Pediatr 2022 27;10:896606. Epub 2022 May 27.

Department of Respiration, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.

Background: Human adenovirus (HAdV) lower respiratory tract infections (LRTIs) are prone to severe cases and even cause death in children. Here, we aimed to develop a classification model to predict severity in pediatric patients with HAdV LRTIs using complete blood count (CBC).

Methods: The CBC parameters from pediatric patients with a diagnosis of HAdV LRTIs from 2013 to 2019 were collected during the disease's course. Read More

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Editorial: Acute Hepatitis of Unknown Origin in Children. Is Autoimmunity at Play?

Med Sci Monit 2022 Jun 4;28:e937371. Epub 2022 Jun 4.

Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico.

A recent global outbreak of cases of acute hepatitis of unknown origin in children has raised health alerts. Increasing numbers of cases are being reported in most countries, mainly in the United Kingdom (UK). Although the cause remains unknown, several viruses have been isolated from affected children, including adenovirus, severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), Epstein-Barr virus (EBV), and rhinovirus. Read More

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[Evaluation of surface water quality in recreational areas, an integrative proposal of chemical and microbiological markers].

Rev Fac Cien Med Univ Nac Cordoba 2022 06 6;79(2):210-214. Epub 2022 Jun 6.

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Climate change affects the interactions between water systems, ecosystems, and the atmosphere. It also increases the risk of the presence of microorganisms which affect the systems that use these resources. The impact of the population on the water resources has become more evident in recent years, highlighting the close relationship between the levels of inorganic components and microbiological contamination of water and community health. Read More

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Human Mobility and Droplet-Transmissible Pediatric Infectious Diseases during the COVID-19 Pandemic.

Int J Environ Res Public Health 2022 06 6;19(11). Epub 2022 Jun 6.

Department of Pediatrics, Tokyo Women's Medical University Yachiyo Medical Center, 477-96 Owada-Shinden, Yachiyo 276-0046, Chiba, Japan.

The study tested the hypothesis that human mobility may be a potential factor affecting reductions in droplet-transmissible pediatric infectious diseases (PIDs) during the coronavirus disease-2019 (COVID-19) pandemic mitigation period in 2020. An ecological study was conducted using two publicly available datasets: surveillance on infectious diseases collected by the Japanese government and COVID-19 community mobility reports presented by Google. The COVID-19 community mobility reports demonstrated percentage reductions in the movement of people over time in groceries and pharmacies, parks, and transit stations. Read More

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Respiratory viral infections in otherwise healthy humans with inherited IRF7 deficiency.

J Exp Med 2022 Jul 7;219(7). Epub 2022 Jun 7.

Department of Infectious Diseases, The Immunodeficiency Unit, Karolinska University Hospital, Stockholm, Sweden.

Autosomal recessive IRF7 deficiency was previously reported in three patients with single critical influenza or COVID-19 pneumonia episodes. The patients' fibroblasts and plasmacytoid dendritic cells produced no detectable type I and III IFNs, except IFN-β. Having discovered four new patients, we describe the genetic, immunological, and clinical features of seven IRF7-deficient patients from six families and five ancestries. Read More

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Development of a Rapid Immuno-Based Screening Assay for the Detection of Adenovirus in Eye Infections.

ACS Omega 2022 May 19;7(21):17555-17562. Epub 2022 May 19.

Alfaisal University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia.

Despite progress in fighting infectious diseases, human pathogenesis and death caused by infectious diseases remain relatively high worldwide exceeding that of cancer and cardiovascular diseases. Human adenovirus (HAdV) infects cells of the upper respiratory tract causing flu-like symptoms that are accompanied by pain and inflammation. Diagnosis of HAdV is commonly achieved by conventional methods such as viral cultures, immunoassays, and polymerase chain reaction (PCR) techniques. Read More

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Microbial surveillance of Hajj tents: Bioaerosol sampling coupled with real-time multiplex PCR.

Am J Infect Control 2022 Jun 2. Epub 2022 Jun 2.

Microbiology Division, Department of Pathology and Laboratory Medicine, College of Medicine, King Saud University Riyadh, Riyadh, Saudi Arabia.

Background: Respiratory tract infections are common among pilgrims attending annual Hajj in Mecca, Saudi Arabia. Pilgrims typically spend most of the Hajj period inside ventilated tents, where microorganisms may be transmitted through bioaerosols and droplets.

Objective: To perform microorganism surveillance inside Hajj tents and assess the similarities between microorganisms isolated from tent bioaerosol samples and nasopharyngeal swabs (NP) of tent occupants. Read More

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Retrospective evaluation of viral respiratory tract infections in a university hospital in Ankara, Turkey (2016-2019).

J Infect Dev Ctries 2022 May 30;16(5):857-863. Epub 2022 May 30.

Division of Medical Virology, Department of Medical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey.

Introduction: Viruses are responsible for two-thirds of all acute respiratory tract infections. This study aims to retrospectively detect respiratory tract viruses in patients from all age groups who visited the hospital.

Methodology: A total of 1592 samples from 1416 patients with respiratory tract symptoms were sent from several clinics to the Molecular Microbiology Laboratory at Gazi University Hospital from February 2016 to January 2019. Read More

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Reduction of Influenza A Virus Transmission in Mice by a Universal Intranasal Vaccine Candidate is Long-Lasting and Does Not Require Antibodies.

J Virol 2022 Jun 31;96(12):e0032022. Epub 2022 May 31.

Division of Cellular and Gene Therapies, Office of Tissues and Advanced Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA.

Vaccination against influenza virus infection can protect the vaccinee and also reduce transmission to contacts. Not all types of vaccines induce sterilizing immunity via neutralizing antibodies; some instead permit low-level, transient infection. There has been concern that infection-permissive influenza vaccines may allow continued spread in the community despite minimizing symptoms in the vaccinee. Read More

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Molecular Typing and Rapid Identification of Human Adenoviruses Associated With Respiratory Diseases Using Universal PCR and Sequencing Primers for the Three Major Capsid Genes: Penton Base, Hexon, and Fiber.

Front Microbiol 2022 12;13:911694. Epub 2022 May 12.

BSL-3 Laboratory, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China.

Human adenoviruses (HAdVs) within species B, C, and E are responsible for highly contagious and potentially severe respiratory disease infections. The traditional method to type these pathogens was based on virus neutralization and hemagglutination assays, which are both time-consuming and difficult, particularly due to the nonavailability of reagents. Subsequent molecular typing based on the partial characterization of the hexon gene and/or the restriction enzyme analysis (REA) of the genomes is inadequate, particularly in identifying recombinants. Read More

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Collateral Impact of Public Health and Social Measures on Respiratory Virus Activity during the COVID-19 Pandemic 2020-2021.

Viruses 2022 05 17;14(5). Epub 2022 May 17.

Department of Preventive Medicine, College of Medicine, Konyang University, Daejeon 35365, Korea.

Many countries have implemented public health and social measures (PHSMs) to control the spread of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Although the PHSMs are targeted at SARS-CoV-2 transmission control, they directly or indirectly impact the epidemiology of different respiratory viral diseases. The purpose of this study was to investigate the collateral impact of PHSMs used during the coronavirus disease 2019 (COVID-19) pandemic on the epidemiology of other respiratory viruses, including influenza, parainfluenza, respiratory syncytial virus, rhinovirus, and adenovirus infections. Read More

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Identification of Inhibitors and Drug Targets for Human Adenovirus Infections.

Viruses 2022 05 4;14(5). Epub 2022 May 4.

State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.

Adenoviruses can cause infections in people of all ages at all seasons of the year. Adenovirus infections cause mild to severe illnesses. Children, immunocompromised patients, or those with existing respiratory or cardiac disease are at higher risk. Read More

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Characterization of Viral miRNAs during Adenovirus 14 Infection and Their Differential Expression in the Emergent Strain Adenovirus 14p1.

Viruses 2022 04 26;14(5). Epub 2022 Apr 26.

Research Section, Boise VA Medical Center, Idaho Veterans Research and Education Foundation, Boise, ID 83642, USA.

Human adenoviruses (HAdV) express either one or two virus-associated RNAs (VA RNAI or VA RNAII). The structure of VA RNA resembles human precursor microRNAs (pre-miRNA), and, like human pre-miRNA, VA RNA can be processed by DICER into small RNAs that resemble human miRNA. VA RNA-derived miRNA (mivaRNA) can mimic human miRNA post-transcriptional gene repression by binding to complementary sequences in the 3' UTR of host mRNA. Read More

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Cytokine Responses to Adenovirus and Adenovirus Vectors.

Viruses 2022 04 24;14(5). Epub 2022 Apr 24.

Lowance Center for Human Immunology, Departments of Pediatrics and Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA.

The expression of cytokines and chemokines in response to adenovirus infection is tightly regulated by the innate immune system. Cytokine-mediated toxicity and cytokine storm are known clinical phenomena observed following naturally disseminated adenovirus infection in immunocompromised hosts as well as when extremely high doses of adenovirus vectors are injected intravenously. This dose-dependent, cytokine-mediated toxicity compromises the safety of adenovirus-based vectors and represents a critical problem, limiting their utility for gene therapy applications and the therapy of disseminated cancer, where intravenous injection of adenovirus vectors may provide therapeutic benefits. Read More

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Inhibition of Human Respiratory Influenza A Virus and Human Betacoronavirus-1 by the Blend of Double-Standardized Extracts of (Michx.) Elliot and L.

Pharmaceuticals (Basel) 2022 May 17;15(5). Epub 2022 May 17.

Laboratory of Virology, Department of Immunology of Infectious Diseases, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland.

Viral and bacterial diseases are among the greatest concerns of humankind since ancient times. Despite tremendous pharmacological progress, there is still a need to search for new drugs that could treat or support the healing processes. A rich source of bioactive compounds with antiviral potency include plants such as black chokeberry and elderberry. Read More

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A Hierarchical Genotyping Framework Using DNA Melting Temperatures Applied to Adenovirus Species Typing.

Int J Mol Sci 2022 May 13;23(10). Epub 2022 May 13.

bioMérieux Inc., Salt Lake City, UT 84108, USA.

Known genetic variation, in conjunction with post-PCR melting curve analysis, can be leveraged to provide increased taxonomic detail for pathogen identification in commercial molecular diagnostic tests. Increased taxonomic detail may be used by clinicians and public health decision-makers to observe circulation patterns, monitor for outbreaks, and inform testing practices. We propose a method for expanding the taxonomic resolution of PCR diagnostic systems by incorporating a priori knowledge of assay design and sequence information into a genotyping classification model. Read More

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Forssk. Extract Affects Human Breast Cancer Cell MCF-7 Survival and Viral Replication.

Cells 2022 05 19;11(10). Epub 2022 May 19.

Nacture S.r.l., Spin-Off University of Catania, 95123 Catania, Italy.

Background: Breast cancer (BC) is the leading cause of death worldwide. The severity of BC strictly depends on the molecular subtype. The less aggressive hormone-positive subtype is treated with adjuvant endocrine therapy (AET), which causes both physical and psychological side effects. Read More

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Coronavirus, adenovirus, or both? Hepatitis poses mystery.

Authors:
Meredith Wadman

Science 2022 05 26;376(6596):906-907. Epub 2022 May 26.

Researchers scramble for data on the cause-and therefore the treatment-of liver disease in children. Read More

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Respiratory viruses among pediatric inpatients with acute lower respiratory tract infections in Jinan, China, 2016-2019.

J Med Virol 2022 May 20. Epub 2022 May 20.

Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.

The viral etiologies responsible for acute lower respiratory tract infections (ALRI) are a major cause of pediatric hospitalization, and some develop severe diseases requiring pediatric intensive care unit (PICU) admission. The aim of this study is to determine the prevalence of viruses and risk factors associated with PICU admission among patients hospitalized for ALRI. Nasopharyngeal swabs were collected to detect human rhinovirus (HRV), influenza A and B viruses (IAV and IBV), parainfluenza viruses (PIV), and respiratory syncytial virus (RSV) by reverse transcription-polymerase chain reaction (PCR) and adenovirus (ADV) by PCR. Read More

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Linking digital surveillance and in-depth virology to study clinical patterns of viral respiratory infections in vulnerable patient populations.

iScience 2022 May 21;25(5):104276. Epub 2022 Apr 21.

Vienna Vaccine Safety Initiative, Pediatric Infectious Diseases, Berlin, Germany.

To improve the identification and management of viral respiratory infections, we established a clinical and virologic surveillance program for pediatric patients fulfilling pre-defined case criteria of influenza-like illness and viral respiratory infections. The program resulted in a cohort comprising 6,073 patients (56% male, median age 1.6 years, range 0-18. Read More

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Clinical Outcome of Viral Respiratory Tract Infections in Hospitalized Adults in Norway: High Degree of Inflammation and Need of Emergency Care for Cases With Respiratory Syncytial Virus.

Front Med (Lausanne) 2022 29;9:866494. Epub 2022 Apr 29.

Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.

Background: The clinical features and outcomes of viral respiratory tract infections (RTIs) in adults have not been thoroughly studied, especially the respiratory syncytial virus (RSV) disease burden. It has become apparent that outbreaks of RSV in the elderly are associated with increased hospitalization rates. However, little data exists on the severity of such viral RTIs in adults, particularly the need for hospitalization, respiratory support and intensive care. Read More

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Human Adenovirus Associated Hepatic Injury.

Front Public Health 2022 28;10:878161. Epub 2022 Apr 28.

Department of Infectious Diseases, First Affiliated Hospital of Soochow University, Suzhou, China.

Human adenovirus (HAdV) is a common virus, but the infections it causes are relatively uncommon. At the same time, the methods for the detection of HAdV are varied, among which viral culture is still the gold standard. HAdV infection is usually self-limited but can also cause clinically symptomatic in lots of organs and tissues, of which human adenovirus pneumonia is the most common. Read More

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Zinc Oxide Nanoparticle-Loaded Electrospun Polyvinylidene Fluoride Nanofibers as a Potential Face Protector against Respiratory Viral Infections.

ACS Omega 2022 May 22;7(17):14887-14896. Epub 2022 Apr 22.

Nanotechnology Research Centre (NTRC), The British University in Egypt, El-Shorouk City, Suez Desert Road, P.O. Box 43, Cairo 11837, Egypt.

ZnO-NPs loaded polyvinylidene fluoride (PVDF) composite nanofibers were fabricated by electrospinning and optimized using different concentrations (0, 2, and 5 wt %) of ZnO-NPs. Characterization techniques, for example, FTIR, SEM, XRD, and tensile strength analysis were performed to analyze the composite nanofibers. Molecular docking calculations were performed to evaluate the binding affinity of PVDF and [email protected] against the hexon protein of adenovirus (PDB ID: 6CGV). Read More

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Rb-E2F-HDAC Repressor Complexes Control Interferon-Induced Repression of Adenovirus To Promote Persistent Infection.

J Virol 2022 Jun 12;96(11):e0044222. Epub 2022 May 12.

Department of Microbiology and Immunology, Renaissance School of Medicine, Stony Brook Universitygrid.36425.36, Stony Brook, New York, USA.

Interferons (IFNs) are cytokines that induce a global change in the cell to establish antiviral immunity. We previously demonstrated that human adenovirus (HAdV) exploits IFN-induced viral repression to persist in infected cells. Although this persistence model has been described, the mechanism behind how persistent HAdV infection is established is not well understood. Read More

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Viral Pneumonias.

Radiol Clin North Am 2022 May;60(3):383-397

Department of Radiology, MSC 10 5530, 1 University of New Mexico, Albuquerque, NM 87131-0001, USA.

Viral pneumonia is usually community acquired and caused by influenza, parainfluenza, respiratory syncytial virus, human metapneumovirus, and adenovirus. Many of these infections are airway centric and chest imaging demonstrates bronchiolitis and bronchopneumonia, With the exception of adenovirus infections, the presence of lobar consolidation usually suggests bacterial coinfection. Community-acquired viral pathogens can cause more severe pneumonia in immunocompromised hosts, who are also susceptible to CMV and varicella infection. Read More

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