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Volume 27, Number 2—February 2021
Research

Plasmodium falciparum Histidine-Rich Protein 2 and 3 Gene Deletions in Strains from Nigeria, Sudan, and South Sudan

Christiane ProsserComments to Author , Karryn Gresty, John Ellis, Wieland Meyer, Karen Anderson, Rogan Lee, and Qin Cheng
Author affiliations: Australian Defence Force Malaria and Infectious Disease Institute, Brisbane, Queensland, Australia (C. Prosser, K. Gresty, K. Anderson, Q. Cheng); Westmead Institute for Medical Research, Westmead, New South Wales, Australia (C. Prosser, W. Meyer); University of Sydney, Sydney, New South Wales, Australia (C. Prosser, W. Meyer, R. Lee); QIMR–Berghofer Medical Research Institute, Brisbane (K. Gresty, K. Anderson, Q. Cheng); University of Technology Sydney, Sydney (J. Ellis); Westmead Hospital, Westmead (W. Meyer); Marie Bashir Institute for Infectious Diseases and Biosecurity, University of Sydney, Sydney (W. Meyer); Centre for Infectious Diseases and Microbiology Laboratory Services, ICPMR, Westmead Hospital, Westmead (R. Lee)

Main Article

Table 2

Assessment of HRP2-based SD BioLine RDT for pfhrp2/pfhrp3 deletion genotypes for Plasmodium spp. isolates, by parasite country of origin, Australia*

Country Sample ID Collection
year Parasitemia,
% erythrocytes Parasites/μL blood Genotype, pfhrp2/pfhrp3 BioLine RDT†
Pan Pf
Sudan BDA1 2016 0.16 8,000 +/+ 1 2
Sudan BDA2 2016 0.79 39,500 –/+ 1 3
Sudan BDA3 2016 0.3 15,000 –/+ 0 1
Sudan BDA4 2016 0.02 1,000 –/+ 0 1
Sudan
BDA37
2014
<0.01
NA
–/+
0
0
South Sudan BDD4 2018 1.24 62,000 +/– 1† 3
South Sudan BDC98 2018 0.5 25,000 –/+ 1 1
South Sudan BDB94 2017 0.5 25,000 –/+ 1 1
South Sudan
BDB99
2017
<0.01
NA
–/+
0
1†
Nigeria BDA24 2015 1.1 55,000 –/+ 0 1
Nigeria BDA92 2012 4 200,000 –/+ 1 1
Nigeria BDA91 2012 2.5 125,000 –/+ 1 1
Nigeria
BDB31
2011
0.08
4,000
–/+
0
0
Kenya BDA42 2014 0.12 6,000 –/+ 2 1
Kenya
BDB19
2011
<0.01
NA
+/+
0
3
Ghana
BDA5
2016
<0.01
NA
–/+
1‡
1‡
Tanzania
BDA28
2015
<0.01
NA
–/+
0
1
Zambia
BDA31
2015
0.2
10,000
–/+
0
1
Togo
BDA50
2014
0.27
13,500
–/+
0
1
Peru
BDA52
2014
0.4
20,000
+/–
1
3
Papua New Guinea BDB6 2012 2.81 140,500 +/+ 1‡ 2
Papua New Guinea
BDB5
2012
<0.01
NA
+/+
1‡
1
Africa BDA99 2012 0.46 23,000 +/+ 0 3
Africa BDA90 2012 1.2 60,000 +/+ 0 3
Africa BDA100 2012 <0.01 NA +/+ 0 1
Africa BDB11 2011 <0.01 NA –/+ 0 0
Africa BDB46 2010 0.01 500 –/+ 0 0

*Gray shading signifies a negative result with both the pan-pLDH and pfHRP2 antigen tests on the RDT. Africa indicates unknown country of origin. ID, identification; NA, not applicable; pan, pan–Plasmodium spp.; Pf, P. falciparum; pfHRP2, Plasmodium falciparum histidine-rich protein 2; pLDH, Plasmodium lactate dehydrogenase; RDT, rapid diagnostic test.
†0–4 result scored by World Health Organization guidelines.
‡Sample results matched outcomes using CareStart Malaria RDT, whereas parasites were not detected by BinaxNOW RDT (Appendix Figures 2, 3).

Main Article

Page created: December 22, 2020
Page updated: January 23, 2021
Page reviewed: January 23, 2021
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