Sentences with phrase «weakened immune response to the vaccine»
Lack of sleep decreases the activity of T - cells (a crucial type of immune cell) and weakens our immune response to vaccines.
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A group of researchers from the U.S. Food and Drug Administration (FDA) has found that DNA vaccines can have the perverse effect of «tolerizing» the immune system, perhaps weakening any future response to the real pathogen.
One reason vaccines using weakened flu virus are not used in the elderly is that they have been exposed to many strains of flu virus over the years and have more antibodies in the nasal tract, which can inhibit the weakened flu virus from infecting and stimulating the immune response necessary to protect against the virus.
All studies showed the addition of the B strain improved the antibody response to that strain and didn't weaken the body's immune response to other flu strains in the vaccine.
Historically, vaccines against viral diseases have used live - attenuated (weakened) viruses or inactivated whole viruses to induce protective immune responses.
The «primer» pandemic influenza vaccine — made from live but weakened virus — introduces the immune system to H7N9 influenza virus, and subsequent vaccination with the «booster» inactivated virus vaccine recalls a more robust immune response.