Blood supply is safe according to American Red Cross

ATLANTA - The American Red Cross says its blood supply is safe despite the possibility that West Nile virus was transmitted through a transfusion. <br> <br> Spokeswoman Trudy Sullivan says no test exists to screen blood for West Nile, but anyone showing flu-like symptoms of the virus would be turned away. <br> <br> Four people may have been infected with West Nile after receiving the kidneys, heart and liver of a woman who died in Georgia in early August after a car accident, the Centers for Disease Control and Prevention reports. <br> <br> Officials say it&#39;s unknown whether the Georgia organ donor was already infected or got West Nile through blood transfusions in the emergency room. <br> <br> The CDC is backtracking to trace donors who contributed the transfused blood, the blood products made from those donations and any other patients who may have received blood or blood products from those donations. <br> <br> Samples from the four transplant recipients were sent to the CDC&#39;s lab in Fort Collins, Colorado. Tests results are expected within the week. <br> <br> There is no test yet that can quickly or accurately identify the presence of the West Nile virus. Patients are diagnosed based on their immune response to the virus. <br> <br> Officials say they remain optimistic that the chances West Nile can spread through blood is low because there have been no confirmed cases to date.