What does H21 mean?

H21 is a suite of gas industry projects, carrying out vital work to prove that the gas network can safely transport hydrogen in the future. Over a third of the UK’s carbon emissions are generated by the 83% of domestic homes currently using natural gas for heating and cooking.

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What does hini stand for?

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 H and N Mean influenza?

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.

Is H5N1 influenza A?

Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus which can cause illness in humans and many other animal species.

What does the 1 in H1N1 mean?

Medical Definition of H1N1 Note: The subtype H1N1 is distinguished by a mutation of hemagglutinin (H1) that affects the ability of the virus to infect cells, and a mutation of a neuraminidase (N1) that enables the release of the replicated virus from cells.

Can H5N1 infect humans?

Although H5N1, H7N9 and H5N6 don’t infect people easily and aren’t usually spread from human to human, several people have been infected around the world, leading to a number of deaths.

Which is worse flu A or flu B?

Type A influenza is generally considered worse than type B influenza. This is because the symptoms are often more severe in type A influenza than in type B influenza. Type A influenza is more common than type B influenza. Researchers suggest that most adults have considerable immunity against type B influenza.

What do the H and N mean in flu?

Influenza A viruses are classified by subtypes based on the properties of their hemagglutinin (H or HA) and neuraminidase (N or NA) surface proteins.