More than 5,000 vaccines that may not have been effective were given to nearly 4,000 patients.
The vaccines were given at Hartford HealthCare facilities in four different locations, and as many as 50 percent will have to be re-vaccinated.
Hartford HealthCare is now in the process of notifying these patients who received vaccines as far back as Jan. 1, 2013, and they said the problem has to do with the temperature these vaccines were stored in.
The vaccines in questions date back to November of 2013, however to be extra cautious the group said it went back to January of 2013.
The vaccines were given by doctors and providers at Hartford HealthCare offices in Enfield, West Hartford, Storrs and Unionville.
The problem was human error and lack of attention, and the vaccines have to be stored at specific temperatures, not less than 32 degrees and not above 40 degrees.
"We have actually looked at the charts all 3,800 patients and other than some cases of flu that occurred, we have not identified any serious illnesses that have occurred - at least not in our medical records," said Dr. Rocco Orlando of Hartford Hospital.
The vaccines were given for the flu and pneumonia, as well as tetanus and pertussis.
Hartford HealthCare Medical Group said it is reaching out to every patient who received an ineffective vaccine so it can offer answers to questions and appointments to receive the appropriate vaccination, at no charge to patients.
Patients should contact their primary care providers for further information. In addition they can call (877)707-4442 for more information.
Information can also be found here.
Copyright 2014 WFSB (Meredith Corporation). All rights reserved.