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Influenza Flu. Section Navigation. Facebook Twitter LinkedIn Syndicate. Understanding Flu Viruses. Minus Related Pages. More Information about Flu Viruses. By using our site, you acknowledge that you have read and understand our Privacy Policy and Terms of Use. Home Diseases, Conditions, Syndromes. Explore further. More information: The U. Journal information: Journal of the American Medical Association. This document is subject to copyright.

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Jan 11, Load comments 0. According to the American College of Emergency Physicians, signs that the flu requires emergency care include:. At the hospital, the doctor may administer antiviral drugs, including adamantanes, such as amantadine and rimantadine Flumadine , and inhibitors of influenza, including neuraminidase inhibitors, such as oseltamivir Tamiflu and zanamivir Relenza , or Peramivir and laninamivir Inavir , if the patient is seen within 48 hours of onset of symptoms, according to WHO.

The CDC recommends that high-risk patients with a flu-like illness get prompt treatment with influenza antiviral drugs, without waiting for testing results to confirm the flu.. Though washing your hands regularly and practicing good hygiene are good tactics for preventing the flu, the best course of action is to receive the flu vaccine every year.

Each year, researchers determine what strain of the influenza virus will be most active and vaccines are produced to prevent infection. The CDC recommends a yearly flu vaccine for everyone 6 months and older. So, why do some people still get the flu after getting a flu shot? The flu vaccine helps protect against the viruses that are predicted to be most common for that particular year.. But it is possible to contract a strain of the virus that is slightly different from those included in the seasonal vaccine.

Still, studies show that when strains in the vaccine are a good match with the ones that are circulating, vaccinated individuals are 60 percent less likely to catch the flu than people who aren't vaccinated, according to the CDC.

And, a study found that those who do get sick may be less likely to develop less serve symptoms if they are vaccinated. This article was updated on Oct. They then separated the membranes from the cells, broke them into tiny pieces, and coated them onto nanoparticles made from a biodegradable polymer that has been pre-packed with mRNA molecules inside. The finished product is a flu virus-like nanoparticle that can get into a cell, break out of the endosome, and free its mRNA payload to do its job: instruct the cell to produce proteins.

The researchers tested the nanoparticles in mice. The nanoparticles were packed with mRNA encoding for a bioluminescent protein called Cypridina luciferase. They were administered both through the nose -- the mice inhaled droplets of a nanoparticle-containing solution applied at the nostrils -- and via intravenous injection.

The researchers imaged the noses and assayed the blood of the mice and found a significant amount of bioluminescence signal. This was evidence that the flu virus-like nanoparticles effectively delivered their mRNA payloads into cells in vivo. Fang, UC San Diego. Materials provided by University of California - San Diego.