H3n2 virus

Picture your local lake covered with migrating geese, ducks or other waterfowl. Even though you don’t hear any coughing, you might well be witnessing ‘flu season’ for birds. Influenza viruses cause gastrointestinal infections in birds, and are spread when birds defecate in water that other birds then drink ( Waterfowl are the main natural reservoir for influenza viruses, and influenza viruses that infect humans and other mammals originally came from birds. This spillover can happen in two ways. The first way involves special mammalian hosts (like pigs) that can be infected by both avian and mammalian influenza viruses ( ( A) One way that avian viruses can adapt to mammals is through virus reassortment, as shown here. The avian virus (red) reassorts with another influenza virus that is already adapted to mammals (green), yielding a new mammalian-adapted virus. For this to happen, a single individual must be infected by both viruses simultaneously. ( B) The other way that avian viruses can adapt to mammals is by direct infection and subsequent adaptation, as is illustrated here. As an avian virus (red) starts to spread between individuals in a mammalian population, it can acquire mutations that make it better at infecting mammals (an evolutionary intermediate is shown in blue). Eventually it may become well-adapted to infecting mammals (green). ( C) Chen at al. isolated H3N2 canine influenza viruses from samples collected between 2012 and 2019 (middle columns), and tested th...

×Top Health Categories • Coronavirus Disease COVID-19 • Gastrointestinal Health • Artificial Intelligence • Heart Disease • Mpox • High Blood Pressure • Allergies • Lung Cancer • Alzheimer's & Dementia • Mental Health • Arthritis & Rheumatology • Pregnancy • Breast Cancer • Type 1 Diabetes • Cold, Flu & Cough • Type 2 Diabetes • Diet & Nutrition • Sexual Health • Eating Disorders • Sleep • Eye Health • By Sally Robertson, B.Sc. May 26 2021 According to research from the University of California, some cases of severe coronavirus disease 2019 (COVID-19) may be related to the immunological memory of previous H3N2 influenza A infection. The team says this “original antigenic sin” may explain the diverse disease outcomes that have been observed following infection with the causative agent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Gregory Weiss and colleagues say the study indicated that the αEp9 antibodies that are observed in severe COVID-19 might have originated from previous infection with H3N2 influenza A. The researchers suggest that future studies investigate the correlation between a country’s rate of the H3N2 2014 influenza and severe COVID-19. Examining epitope conservation and antibody cross-reactivity could enable the prediction of OAS-based immune responses and disease outcomes. Identifying detrimental, benign or beneficial OAS pathways could also be useful in guiding vaccine design, adds the team. A pre-print version of the research paper is ava...

H3N2, an influenza A subtype virus is the primary cause of the sudden spike in flu cases in India. It is a subtype of the A virus that has previously caused outbreaks of a number of influenzas. Most people across the country have been affected by a persistent cough and sporadic fever for the last few months and it also increased hospitalization. The H3N2 subtype of influenza A is the most prevalent strain of the flu virus. Buy From Broad Spectrum Of Face Masks, Hand Sanitisers, Immune-Boosting Supplements, To Stay Healthy And Prevent Influenza Virus! Dive into this article to know what is H3N2v, its symptoms, severity, and treatment options. What Is H3N2 Virus? H3N2v is a non-human influenza virus that usually circulates in pigs and infects humans. Viruses that normally circulate in pigs are “swine influenza viruses” and when these viruses infect humans, they are called “variant “viruses. Influenza A-type viruses are more virulent to public health due to their possibility to cause an influenza pandemic. Influenza type A viruses are further classified into subtypes as per the combinations of different virus surface protein hemagglutinin (HA) and neuraminidase (NA). Until now there are about 18 different strains of hemagglutinin subtypes and 11 different strains of neuraminidase subtypes have been identified. Based on the host source influenza A viruses can be grouped as avian influenza, swine influenza, or other types. Animal type A viruses are entirely different from human...