What type of virus is influenza?
There are four types of influenza viruses: A, B, C and D. Human influenza A and B viruses cause seasonal epidemics of disease (known as flu season) almost every winter in the United States. Influenza A viruses are the only influenza viruses known to cause flu pandemics, i.e., global epidemics of flu disease.
What is influenza virus Wikipedia?
Influenza, commonly known as “the flu”, is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue.
What is influenza h1n?
Overview. The H1N1 flu, commonly known as swine flu, is primarily caused by the H1N1 strain of the flu (influenza) virus. H1N1 is a type of influenza A virus, and H1N1 is one of several flu virus strains that can cause the seasonal flu. Symptoms of the H1N1 flu are the same as those of the seasonal flu.
What is influenza virus in English?
Influenza is a viral infection that attacks your respiratory system — your nose, throat and lungs. Influenza is commonly called the flu, but it’s not the same as stomach “flu” viruses that cause diarrhea and vomiting.
What causes influenza?
What Causes the Flu? The flu is caused by influenza viruses that infect the nose, throat, and lungs. These viruses spread when people with flu cough, sneeze or talk, sending droplets with the virus into the air and potentially into the mouths or noses of people who are nearby.
What is the new flu called?
October 22, 2021—CDC today reported two new U.S. human infections with influenza viruses that usually spread in pigs and not people. These types of infections are called “variant influenza virus” infections and denoted with the letter “v” after the influenza subtype.
Why it is called H1N1?
It’s called swine flu because in the past, the people who caught it had direct contact with pigs. That changed several years ago, when a new virus emerged that spread among people who hadn’t been near pigs. In 2009, H1N1 was spreading fast around the world, so the World Health Organization called it a pandemic.
Which medicine is best for influenza?
There are four FDA-approved antiviral drugs recommended by CDC to treat flu this season.
- oseltamivir phosphate (available as a generic version or under the trade name Tamiflu®),
- zanamivir (trade name Relenza®)
- peramivir (trade name Rapivab®), and.
- baloxavir marboxil (trade name Xofluza®).
What is the effect of influenza?
Complications of flu can include bacterial pneumonia, ear infections, sinus infections and worsening of chronic medical conditions, such as congestive heart failure, asthma, or diabetes.
What is the pathogenesis of influenza?
The primary mechanism of influenza pathophysiology is a result of lung inflammation and compromise caused by direct viral infection of the respiratory epithelium, combined with the effects of lung inflammation caused by immune responses recruited to handle the spreading virus (Table 1).