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(KSL News) -- One shot and two years of relief -- that may be on the horizon for those who suffer from hayfever.
Researchers at Johns Hopkins are testing an allergy vaccine that appears to stop symptoms for up to two years.
25 adults who are allergic to ragweed participated in a study testing a vaccine designed to block immune system aggravation by common allergens.
Half the group received six weekly injections of the vaccine and were monitored through two Fall ragweed seasons.
Researchers found the group that received the vaccine had significantly fewer allergy symptoms, like sneezing and watery eyes, and continued to be protected a year after their original vaccination.
