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* The [[Andaman]] and [[Nicobar]] Islands, now part of [[India]], were originally inhabited by 14 aboriginal tribes. Several of these have gone extinct. One surviving tribe—the [[Jarawa (Andaman Islands)|Jarawas]]—live in three jungle areas of [[South Andaman]] and one jungle area in [[Middle Andaman]]. The area is endemic for [[malaria]]. The causative species is ''[[Plasmodium falciparum]]'': there is no evidence for the presence of ''[[Plasmodium vivax]]''. Blood grouping revealed an absence of both Fy(a) and Fy(b) antigens in two areas and a low prevalence in two others.<ref name="pmid15943709">{{cite journal | author = Das MK, Singh SS, Adak T, Vasantha K, Mohanty D | title = The Duffy blood groups of Jarawas - the primitive and vanishing tribe of Andaman and Nicobar Islands of India | journal = Transfus Med | volume = 15 | issue = 3 | pages = 237–40 | year = 2005 | month = June | pmid = 15943709 | doi = 10.1111/j.1365-3148.2005.00583.x | url = | issn = | doi_brokendate = 2010-07-17 }}</ref>
* In the [[Yemen]]ite [[Jew]]s the frequency of the Fy allele is 0.5879<ref name="pmid7346047">{{cite journal | author = Kobyliansky E, Micle S, Goldschmidt-Nathan M, Arensburg B, Nathan H | title = Duffy, Kell and P blood group systems in some Jewish populations of Israel | journal = Acta Anthropogenet | volume = 4 | issue = 3-4 | pages = 173–9 | year = 1980 | pmid = 7346047 | doi = | url = | issn = }}</ref> The frequency of this allelle varies from 0.1083 to 0.2191 among Jews from the [[Middle East]], [[North Africa]] and [[Southern Europe]]. The incidence of Fya among Ashkenazi Jews is 0.44 and among the non-Ashkenazi jews it is 0.33. The incidence of Fyb is higher in both groups with frequencies of 0.53 and 0.64 respectively.<ref name="Parasol2001">Parasol N, Cohen N, Zemishlany Z, Lerer B and Kosower NS (2001) Duffy Antigen/Receptor for Chemokines (DARC): Genotypes in Ashkenazi and Non-Ashkenazi Jews in Israel. Human Biology 73(2) 307–313</ref>
* In the [[Chinese people|Chinese]] ethnic populations—the [[Han (people)|Han]] and the [[She people]]—the frequencies of Fya and Fyb alleles were 0.94 and 0.06 and 0.98 and 0.02 respectively.<ref name="pmid15783300">{{cite journal | author = Yan L, Zhu F, Fu Q, He J | title = ABO, Rh, MNS, Duffy, Kidd,Yt, Scianna, and Colton blood group systems in indigenous Chinese | journal = Immunohematology | volume = 21 | issue = 1 | pages = 10–4 | year = 2005 | pmid = 15783300 | doi = | url = | issn = }}</ref>
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