Antibodies were found against 30 strains of influenza

US scientists say they have found an antibody capable of fighting 30 of the 36 influenza strains.

Influenza viruses have 2 surface glycoproteins, hemagglutinin and neuraminidase. These molecules change over time to help the virus avoid the immune response so that flu vaccines need to be recast each year. Hemagglutinin is a molecule that binds to the sialic acid receptor , regulates viral entry into the target cell.

Neutralizing antibodies named CH 65 were discovered by scientists in the cells of a volunteer participant, who was vaccinated for 2007, capable of clinging to the surface of hemagglutinin and neutralizing them.

"This shows us that the human immune system can regulate the response to the influenza virus. Our goal is to understand how the immune system selects antibodies and uses the best information. in creating widespread vaccine against influenza viruses , " said Stephen Harrison of Children's Hospital Boston, author of the study.

Last week, researchers in the UK and Switzerland reported in the American Journal of Science that the first FI6 antibody was found against all A. influenza viruses.