Sentences with phrase «circulating virus»

Flu vaccines work by introducing a killed version of circulating virus strains, which trains the body's immune system to recognize and attack similar invaders in the future.

That process — dependent on the careful selection of circulating virus strains and the identification of mutations in the part of the virus that recognizes host cells — could soon be augmented by a new approach.

The two patients who saw 10-fold reductions in circulating virus also had more doubly sabotaged cells than the three who didn't respond as well.

As a result, HA antibody levels have traditionally been used to guide vaccine strain selection and to infer how effective that vaccine might be against circulating viruses until field studies are available.

«There were a couple of these in the vaccine strain the past two seasons that wound up making it a little bit different from the actual circulating virus strain.»

In another case, those same two cancer patients» viruses had tyrosine at position 193, but globally circulating viruses had either phenylalanine or serine at that position, the researchers found.

Early in their study, the team noticed differences between the expected 3BNC117 abundance in humans over time, given its half - life, and the actual abundance, a discrepancy hinting that some of the antibodies may be targeting not just circulating virus particles but HIV - infected cells as well.

How much protection the annual flu shot provides depends on how well the vaccine (which is designed based on a «best guess» for next season's flu strain) matches the actually circulating virus.

Further experiments revealed that the virus appears to produce a protein that prevents other viruses penetrating the embryo, suggesting it protects the embryo from dangerous circulating viruses, such as influenza.

Further experiments revealed that HERV - K appears to produce a protein that prevents other viruses penetrating the embryo, suggesting it protects it from circulating viruses such as influenza.

Of six people with HIV given the treatment, one cleared the virus completely and another two saw 10-fold drops in circulating virus.

The other major benefit would be preventing the spread of HIV, because the antiretroviral drugs rapidly reduce the amount of circulating virus.

I figure he's powering up his immune system with vitamin C to fight off all of those circulating viruses.

«The matching process is not a perfect science, therefore, in some flu seasons, the vaccine available in the fall is not a good match for the circulating virus strains and is less effective,» said senior author David Weiner, Ph.D., Executive Vice President and Director of the Vaccine and Immune Therapy Center at The Wistar Institute.

And there are new creative approaches: One research group is trying to make a kind of super shot by anticipating every possible mutation a circulating virus might undergo.

The new vaccine could arrive too late, not reach enough people, or not defend against the circulating virus for the following reasons:

Merck began a second trial of its vaccine in February in South Africa, where the circulating virus differs from the one the vaccine is based on.

The virus itself will continue to mutate from year to year — a process referred to as antigenic drift — and over time it becomes less well matched to the vaccine strain, meaning that the antibodies you generate from getting the vaccine may be less effective in neutralizing the circulating virus.

So, due to natural changes in the virus as it evolves, as well as due to mutations that may be caused by growing the vaccine strain, the circulating virus and the vaccine become less well matched over time.