Sentence: WNV + donors exhibited increased frequencies of blood group A ( S 47.6 % AS 36.8 % , P = 0.04 , OR ( 95 % CI ) 1.56 ( 1.01-2.40 ) ) and Rh ( D ) - negative individuals ( S 21.5 % AS 13.1 % , P = 0.03 , OR ( 95 % CI ) 1.82 ( 1.04-3.18 ) ). 
 Section: finding