H3n2 virus symptoms

We all know that time of year. As the weather begins to cool, cases of the flu begin to rise, and the flu season begins. The Influenza A viruses are further divided into different subtypes based on two proteins found on the surface of the virus — hemagglutinin (HA) and neuraminidase (NA). There are 18 different subtypes of HA, which are numbered H1 through H18. Similarly, there are 11 different subtypes of NA, numbered N1 through N11. Influenza A viruses are classified according to both their HA and NA subtypes. Some influenza A subtypes that you may be familiar with include Let’s take a closer look at H3N2 influenza viruses. Flu caused by H3N2 viruses predominated during the 2017/18 flu season. Typically, flu seasons that are dominated by H3N2 activity are more severe, particularly among at-risk groups such as Data for the 2017/18 flu season indicated that there were In comparison, there were Additionally, the When broken down by virus, the vaccine was 65 percent effective against H1N1, 25 percent effective against H3N2, and 49 percent effective against influenza B. The H3N2 virus was first discovered in humans in 1968. In a after a person contracts the virus. In other words, the antibodies won’t help prevent viral infection. The researchers noted that H3N2 strains have evolved dramatically since people born in the late 1960s and 1970s first encountered the virus as children. This helps explain their immune response. Each year, the annual flu vaccine protects against eith...

The cases of spring flu and seasonal flu are on the rise across the country, with the Centre saying that the infection is spreading because of a subtype of the Influenza A virus, which is the H3N2 flu. This flu is also replicating the symptoms of coronavirus in people. A sudden spike in the cases of the H3N2 flu has been noted in places like Delhi, Mumbai, Uttar Pradesh, and several parts of India in the first week of March, with the Centre issuing an important advisory on how to protect yourself from influenza this spring. Here are some of the groups which are at risk of contracting and having serious complications from the H3N2 seasonal flu – • Children below the age of 5 • Adults above the age of 65 • Asthma or respiratory disease patients • People with neurologic and neurodevelopment conditions • People with blood disorders such as sickle cell anemia • People suffering from chronic lung diseases • People who are obese, have BMI of more than 40 • People having heart, kidney, or liver disorders How to keep yourself safe from seasonal flu ICMR has issued an advisory regarding the spread of the influenza virus across the country, urging people to avoid crowded places, wear masks in public, frequently wash hands and maintain all hygiene measures during the Holi season. READ |What is H3N2 virus? Know similarities with Covid, symptoms, treatment, dangers of Influenza A virus

All viral respiratory illnesses be it influenza A- H3N2, H1N1 variant, novel coronavirus 19, and omicron sub variant, are steadily increasing, because of host of environmental factors (REPRESENTATIVE IMAGE) "Currently approximately 30 per cent of patients visit with symptoms of upper or lower respiratory issues. Symptoms are more or less the same for any viral illness- sore throat, dry cough, headache, myalgia, diarrhoea, only difference is that in the present clinical scenario, Covid symptoms barely last for 2-3 days and the patient recovers soon without any hassles and any major treatment. Whereas with H3N2 and H1N1 has more predilection for productive and wet coughs which lasts longer for a few weeks and has more chances of getting pneumonia or a secondary bacterial infection. Irrespective of the virus if there is a major comorbid factor there are more chances of morbidity and mortality," Dr Samrat Shah, Senior Consultant, Internal Medicine, Sir HN Reliance Foundation Hospital told HT Digital. Elaborating on the causes of rise in respiratory infections, Dr Shah said, "in the current scenario, all viral respiratory illnesses be it influenza A- H3N2, H1N1 variant, novel coronavirus 19, and omicron sub variant, these are steadily increasing, because of host of environmental factors. Some of the host factors are avoidance of face masks, casual attitude towards general health, lack of hand hygiene, and more social gatherings. Some of the environmental factors contributing to...

H3N2 is a subtype of Influenza A virus, which is an important cause of human influenza, according to Centres for Disease Control (CDC) and World health Organization (WHO). What are the symptoms? According to WHO, avian, swine and other zoonotic influenza infections in humans may cause disease ranging from mild upper respiratory infection (fever and cough) to rapid progression to severe pneumonia, acute respiratory distress syndrome, shock and even death. Some of the common symptoms of H3N2 virus are: • Chills • Coughing • Fever • Nausea • Vomiting • Throat ache/sore throat • An ache in muscles and body • In some cases, diarrhoea • Sneezing and runny nose If a person experiences difficulty in breathing, pain or discomfort in chest, continuous fever and pain in throat while gulping down the food, it is very important to see a doctor. How does the virus spread? The extremely contagious H3N2 influenza can be transmitted from one person to another through droplets released when coughing, sneezing, or talking by an infected individual. It can also spread if someone touches their mouth or nose after contacting a surface that has the virus on it. Pregnant women, young children, elderly adults, and persons with underlying medical issues are at a higher risk of flu-related complications. What are the precautions to be taken? Since the virus attacks the respiratory tract, it is very important to: • Keep checking the oxygen level continuously with the help of Pulse Oximeter • If the o...

H3N2 flu claims two lives: Health Ministry “India every year witnesses two peaks of seasonal influenza – one from January to March and other in the post-monsoon season. The cases arising from seasonal influenza are expected to decline from March end,” the Ministry said. What is H3N2? The influenza A virus is known to cause seasonal flu disease in humans. These are divided into subtypes based on two proteins found on the surface of the virus: hemagglutinin (H) and neuraminidase (N). There are 18 H-subtypes and 11 N-subtypes. More than 130 influenza A subtype combinations have been identified in nature so far, but virus reassortment, a process by which influenza viruses swap genetic information, makes many more subtypes possible, the U.S. Centres for Disease Control and Prevention said. The H3N2 subtype appears to cause more hospitalisations than other influenza subtypes, India’s Ministry of Health and Welfare noted. About half of all inpatient severe acute respiratory infections (SARI) and outpatient illnesses displaying influenza-like symptoms seen in surveillance data collected between December 15, 2022, and March 10, 2023, were found to have been H3N2 infections. Out of the SARI patients infected with H3N2, 10% needed oxygen, and 7% needed ICU support. Symptoms Infection by the H3N2 subtype of influenza A virus presents with classic flu symptoms that are also similar to COVID-19 symptoms – fever, cough, body ache, breathlessness, wheezing and pneumonia. Seasonal influenz...