Published: 07 April 2021 A Walgreens in Hampton says it “improperly stored” a portion of the Pfizer vaccine doses it administered last month. Patients who received a shot between March 12 and 26 may need to get revaccinated, according to the chain. “Walgreens has discovered that certain vials of COVID-19 vaccine were improperly stored at one of our pharmacies before being administered to patients,” company spokesman Fraser Engerman told WHRO. The problem impacted Pfizer vials at the pharmacy location on Mercury Boulevad. Engerman said staff were in the process of contacting patients who may need to get re-vaccinated, but he would not say how many doses were affected.