Chloroquine-Resistant Haplotype Plasmodium falciparum Parasites, Haiti
Plasmodium falciparum parasites have been endemic to Haiti for >40 years without evidence of chloroquine (CQ) resistance. In 2006 and 2007, we obtained blood smears for rapid diagnostic tests (RDTs) and filter paper blots of blood from 821 persons by passive and active case detection. P. falcipar...
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Centers for Disease Control and Prevention
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doaj-983e6cbaff364b25953f4d80dd9033072020-11-25T02:11:10ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592009-05-0115573574010.3201/eid1505.081063Chloroquine-Resistant Haplotype Plasmodium falciparum Parasites, HaitiBerlin L. LondonoThomas P. EiseleJoseph KeatingAdam BennettChandon ChattopadhyayGaetan HeyligerBrian MackIan RawsonJean-Francois VelyOlbeg DésinorDonald J. KrogstadPlasmodium falciparum parasites have been endemic to Haiti for >40 years without evidence of chloroquine (CQ) resistance. In 2006 and 2007, we obtained blood smears for rapid diagnostic tests (RDTs) and filter paper blots of blood from 821 persons by passive and active case detection. P. falciparum infections diagnosed for 79 persons by blood smear or RDT were confirmed by PCR for the small subunit rRNA gene of P. falciparum. Amplification of the P. falciparum CQ resistance transporter (pfcrt) gene yielded 10 samples with amplicons resistant to cleavage by ApoI. A total of 5 of 9 samples had threonine at position 76 of pfcrt, which is consistent with CQ resistance (haplotypes at positions 72–76 were CVIET [n = 4] and CVMNT [n = 1]); 4 had only the wild-type haplotype associated with CQ susceptibility (CVMNK). These results indicate that CQ-resistant haplotype P. falciparum malaria parasites are present in Haiti.https://wwwnc.cdc.gov/eid/article/15/5/08-1063_articleMalariaparasitesPlasmodium falciparumHaitichloroquineP. falciparum chloroquine resistance transporter |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Berlin L. Londono Thomas P. Eisele Joseph Keating Adam Bennett Chandon Chattopadhyay Gaetan Heyliger Brian Mack Ian Rawson Jean-Francois Vely Olbeg Désinor Donald J. Krogstad |
spellingShingle |
Berlin L. Londono Thomas P. Eisele Joseph Keating Adam Bennett Chandon Chattopadhyay Gaetan Heyliger Brian Mack Ian Rawson Jean-Francois Vely Olbeg Désinor Donald J. Krogstad Chloroquine-Resistant Haplotype Plasmodium falciparum Parasites, Haiti Emerging Infectious Diseases Malaria parasites Plasmodium falciparum Haiti chloroquine P. falciparum chloroquine resistance transporter |
author_facet |
Berlin L. Londono Thomas P. Eisele Joseph Keating Adam Bennett Chandon Chattopadhyay Gaetan Heyliger Brian Mack Ian Rawson Jean-Francois Vely Olbeg Désinor Donald J. Krogstad |
author_sort |
Berlin L. Londono |
title |
Chloroquine-Resistant Haplotype Plasmodium falciparum Parasites, Haiti |
title_short |
Chloroquine-Resistant Haplotype Plasmodium falciparum Parasites, Haiti |
title_full |
Chloroquine-Resistant Haplotype Plasmodium falciparum Parasites, Haiti |
title_fullStr |
Chloroquine-Resistant Haplotype Plasmodium falciparum Parasites, Haiti |
title_full_unstemmed |
Chloroquine-Resistant Haplotype Plasmodium falciparum Parasites, Haiti |
title_sort |
chloroquine-resistant haplotype plasmodium falciparum parasites, haiti |
publisher |
Centers for Disease Control and Prevention |
series |
Emerging Infectious Diseases |
issn |
1080-6040 1080-6059 |
publishDate |
2009-05-01 |
description |
Plasmodium falciparum parasites have been endemic to Haiti for >40 years without evidence of chloroquine (CQ) resistance. In 2006 and 2007, we obtained blood smears for rapid diagnostic tests (RDTs) and filter paper blots of blood from 821 persons by passive and active case detection. P. falciparum infections diagnosed for 79 persons by blood smear or RDT were confirmed by PCR for the small subunit rRNA gene of P. falciparum. Amplification of the P. falciparum CQ resistance transporter (pfcrt) gene yielded 10 samples with amplicons resistant to cleavage by ApoI. A total of 5 of 9 samples had threonine at position 76 of pfcrt, which is consistent with CQ resistance (haplotypes at positions 72–76 were CVIET [n = 4] and CVMNT [n = 1]); 4 had only the wild-type haplotype associated with CQ susceptibility (CVMNK). These results indicate that CQ-resistant haplotype P. falciparum malaria parasites are present in Haiti. |
topic |
Malaria parasites Plasmodium falciparum Haiti chloroquine P. falciparum chloroquine resistance transporter |
url |
https://wwwnc.cdc.gov/eid/article/15/5/08-1063_article |
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