Medical research

New study explains important cause of fatal influenza

It is largely unknown why influenza infections lead to an increased risk of bacterial pneumonia. Researchers at Karolinska Institutet have now described important findings leading to so-called superinfections, which claim ...

Diseases, Conditions, Syndromes

More COVID-19 myths to debunk

As the COVID-19 pandemic continues, a surge of infections is happening across the U.S. Midwest, including many communities served by Mayo Clinic Health System in Wisconsin, Iowa and Minnesota. Some of those locations have ...

Diseases, Conditions, Syndromes

Q&A: How a COVID-19 vaccine may look different than others

As flu season approaches and scientists continue to work toward a vaccine for COVID-19, Andrea Amalfitano uses his expertise in developing innovative treatments for a variety of diseases to shed light on the process for creating ...

Diseases, Conditions, Syndromes

Coronavirus survives on skin five times longer than flu: study

The coronavirus remains active on human skin for nine hours, Japanese researchers have found, in a discovery they said showed the need for frequent hand washing to combat the COVID-19 pandemic.

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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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