Efficacy of Chloroquine for the Treatment of Uncomplicated Plasmodium falciparum Malaria in Honduras

Rosa Elena Mejia Torres National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Engels Ilich Banegas National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Meisy Mendoza National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Cesar Diaz National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Sandra Tamara Mancero Bucheli National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Gustavo A. Fontecha National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Md Tauqeer Alam National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Ira Goldman National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Venkatachalam Udhayakumar National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Jose Orlinder Nicolas Zambrano National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras; National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador; Area of Health Surveillance and Disease Control, Pan American Health Organization, Honduras; Department of Masters in Infectious diseases and Zoonoses (MEIZ)-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras; Atlanta Research and Education Foundation, Decatur, Georgia; Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia; National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras

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Chloroquine (CQ) is officially used for the primary treatment of Plasmodium falciparum malaria in Honduras. In this study, the therapeutic efficacy of CQ for the treatment of uncomplicated P. falciparum malaria in the municipality of Puerto Lempira, Gracias a Dios, Honduras was evaluated using the Pan American Health Organization—World Health Organization protocol with a follow-up of 28 days. Sixty-eight patients from 6 months to 60 years of age microscopically diagnosed with uncomplicated P. falciparum malaria were included in the final analysis. All patients who were treated with CQ (25 mg/kg over 3 days) cleared parasitemia by day 3 and acquired no new P. falciparum infection within 28 days of follow-up. All the parasite samples sequenced for CQ resistance mutations (pfcrt) showed only the CQ-sensitive genotype (CVMNK). This finding shows that CQ remains highly efficacious for the treatment of uncomplicated P. falciparum malaria in Gracias a Dios, Honduras.

Author Notes

* Address correspondence to Rosa Elena Mejia Torres, National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras. E-mail: rosaelenamejiatorres@yahoo.com

Financial support: This work was funded by the US Agency for International Development (USAID) under the USAID Pan American Health Organization agreement for the Amazon Malaria Initiative Network for Surveillance of Anti-Malarial Drug Resistance Project 527A-00-08-00026-00 and the Ministry of Health of Honduras.

Authors' addresses: Rosa Elena Mejia Torres, Engels Ilich Banegas, and Meisy Mendoza, National Malaria Laboratory, National Department of Surveillance, Ministry of Health, Honduras, E-mails: rosaelenamejiatorres@yahoo.com, engelsbanegas@yahoo.com, and elimeis@hotmail.com. Cesar Diaz, National Malaria Eradication Service (SNEM), Ministry of Public Health, Ecuador, E-mail: diazcortezert@gmail.com. Sandra Tamara Mancero Bucheli, Pan American Health Organization, Honduras, E-mail: mancerot@paho.org. Gustavo A. Fontecha, Department of Masters in Infectious diseases and Zoonoses-Microbiology School, National Autonomous University of Honduras (UNAH), Tegucigalpa, Honduras, E-mail: gustavo.fontecha@unah.edu.hn. Md Tauqeer Alam, Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta Research and Education Foundation, Decatur, GA, E-mail: hsf1@cdc.gov. Ira Goldman and Venkatachalam Udhayakumar, Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA, E-mails: ifg1@cdc.gov and vxu0@cdc.gov. Jose Orlinder Nicolas Zambrano, National Malaria Program, Department of Health Promotion, Ministry of Health, Honduras, E-mail: jnicolaszambrano@yahoo.es.

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