Urgent calls for O-negative blood donorsThe Red Cross Blood Service is calling on people with the rare O-negative blood type to donate as reserves are critically low.Blood Vessel and Heart Abstract Concept on White Background, Close-up View. Source: Getty Images/MirageCPublished 6 August 2019 1:13pmBy Peyman JamaliSource: AAPAvailable in other languagesSkip to article contentShare this with family and friendsCopy linkShareShare