Diseases, Conditions, Syndromes

Chinese man hospitalized with H5N6 bird flu

A man in China has been hospitalized with the H5N6 strain of avian flu, which is one of several potentially dangerous strains that can infect humans.

Diseases, Conditions, Syndromes

We should treat COVID like norovirus—not the flu

Because COVID symptoms—fever, cough, aches—are similar to flu symptoms, it is tempting to compare the two. Indeed, the UK's new health secretary, Sajid Javid, recently said: "We are going to have to learn to accept the ...

Diseases, Conditions, Syndromes

Inside the lungs, a new hope for protection against flu damage

The seasonal flu kills up to 600,000 people a year worldwide and has a century-long history of pandemics. Examples include the Spanish flu in the late 1910s or the H1N1 in 2009, which together claimed more than 50 million ...

Diseases, Conditions, Syndromes

First human case of H10N3 bird flu: What we know

China revealed the first human case of H10N3 bird flu on Tuesday, an announcement that has so far raised no alarm among world health authorities.

Diseases, Conditions, Syndromes

Vaccine protection may diminish need for yearly boosters

Scientists have found clues that the world's leading COVID-19 vaccines offer lasting protection that could diminish the need for frequent booster shots, but they caution that more research is needed and that virus mutations ...

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Orthomyxoviridae

Influenzavirus A Influenzavirus B Influenzavirus C Isavirus Thogotovirus

The Orthomyxoviridae (orthos, Greek for "straight"; myxa, Greek for "mucus") are a family of RNA viruses that includes five genera: Influenzavirus A, Influenzavirus B, Influenzavirus C, Isavirus and Thogotovirus. The first three genera contain viruses that cause influenza in vertebrates, including birds (see also avian influenza), humans, and other mammals. Isaviruses infect salmon; thogotoviruses infect vertebrates and invertebrates, such as mosquitoes and sea lice.

The three genera of Influenzavirus, which are identified by antigenic differences in their nucleoprotein and matrix protein infect vertebrates as follows:

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