What is H1N1 an example of?

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 does H1N1 mean?

The H1N1 virus (swine flu) is an infection of the nose, throat, and lungs. It is caused by the H1N1 influenza virus.

Why is it 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.

What does H and N mean in viruses?

H & N. The H stands for one of the 16 different hemagglutinin proteins contained in a virus that allows it to penetrate a foreign body. The “N” stands for another protein in the genetic make-up of a flu virus called neuraminidase, of which there currently exist nine variations.

What is H5N1 also known as?

Bird flu, also called avian influenza, is a viral infection that can infect not only birds, but also humans and other animals. Most forms of the virus are restricted to birds. H5N1 is the most common form of bird flu.

What do H and N stand for in H1N1?

Influenza A viruses are divided into subtypes based on two proteins on the surface of the virus: hemagglutinin (H) and neuraminidase (N).

What is flu B?

Unlike type A flu viruses, type B flu is found only in humans. Type B flu may cause a less severe reaction than type A flu virus, but occasionally, type B flu can still be extremely harmful. Influenza type B viruses are not classified by subtype and do not cause pandemics.

What is H5 or H7 virus?

In recent years, influenza viruses of the H5 and H7 subtypes have each caused several hundred human infections with mortality rates exceeding 30%. Severe disease and death are the result of pneumonia and acute respiratory distress syndrome (ARDS).