Flu virus origin

We're having a worse flu season than last year which isn't hard, considering last year we barely had any flu at all and with how incredibly prevalent COVID is, it's more likely that you could come into contact with people who have either, in a short time period, which could lead you to be infected with both," she says.

To protect against both viruses , the advice is the same — get vaccinated against COVID and the flu, wear masks in crowded or poorly ventilated spaces and stay home when you're sick. And for people who do get infected with both, the treatment plans are no different than if you just had one of the viruses.

And Bristow said that while "flurona" isn't new, "hopefully this will at least put an end to the conspiracy that all COVID cases are actually the flu. As information about the coronavirus pandemic rapidly changes, PEOPLE is committed to providing the most recent data in our coverage. Each week, the vital statistics office of cities across the U. The system is retired in October Pereira and colleagues propose a relationship between human and avian flu viruses after a study shows an antigenic relationship between the human pandemic A virus and an influenza A virus isolated from a turkey.

The study raises the question and triggers the body of work on whether human influenza viruses are of avian origin. Most of those deaths are in people 65 and older. H3N2 viruses circulating today are descendants of the H3N2 virus that emerges in Cases of Guillain-Barre syndrome, a neurologic condition that in rare instances has been associated with vaccination, among vaccine recipients appeared to be in excess of what was expected, so officials determine the vaccination program should be halted.

The program increases the likelihood of children getting recommended vaccinations on schedule. It is a critical tool for tracking the movement of flu viruses globally. Country data is updated weekly and is publically available. Similar to influenza A viruses, influenza B viruses can then be further classified into specific clades and sub-clades. Influenza B viruses generally change more slowly in terms of their genetic and antigenic properties than influenza A viruses, especially influenza A H3N2 viruses.

Influenza surveillance data from recent years shows co-circulation of influenza B viruses from both lineages in the United States and around the world. However, the proportion of influenza B viruses from each lineage that circulate can vary by geographic location and by season.

Figure 2 — This image shows how influenza viruses are named. The name starts with the virus type, followed by the place the virus was isolated, followed by the virus strain number often a sample identifier , the year isolated, and finally, the virus subtype. CDC follows an internationally accepted naming convention for influenza viruses.

This convention was accepted by WHO in and published in February in the Bulletin of the World Health Organization, 58 4 see A revision of the system of nomenclature for influenza viruses: a WHO Memorandum pdf icon[ KB, 7 pages]external icon pdf icon external icon.

The approach uses the following components:. Getting a flu vaccine can protect against these viruses as well as additional flu viruses that are antigenically similar to the viruses used to make the vaccine. Seasonal flu vaccines do not protect against influenza C or D viruses or against zoonotic animal-origin flu viruses that can cause human infections, such as variant or avian flu viruses.

In addition, flu vaccines will NOT protect against infection and illness caused by other viruses that also can cause influenza-like symptoms. There are many other viruses besides influenza that can result in influenza-like illness ILI that spread during flu season. To receive weekly email updates about Seasonal Flu, enter your email address:.

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