Mapping Rare Erythrocyte Phenotypes in Morocco: A Tool to Overcome Transfusion Challenges

Table 2

Kell, MNS, Duffy, and Kidd blood group frequencies (%) compared with other ethnic groups.

Phenotypes	Our donors (%) (𝑁)	Caucasians [16]	Blacks [16]
K+k−	0.19 (1)	0.2	Rare
K+k+	9.16 (47)	8.8	2
K−k+	90.64 (465)	91	98
S+s−	8.77 (45)	11	3
S+s+	34.31 (176)	44	28
S−s+	56.92 (292)	45	69
Fy (a+ b−)	19.30 (99)	17	9
Fy (a+ b+)	27.88 (143)	49	1
Fy (a− b+)	41.72 (214)	34	22
Fy (a− b−)	11.11 (57)	Very rare	68
Jk (a+ b−)	34.70 (178)	28	57
Jk (a+ b+)	49.51 (254)	49	34
Jk (a− b+)	15.79 (81)	23	9
Jk (a− b−)	0	Very rare	Very rare