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Article History

Received: 25 April 2019

Accepted: 22 August 2019

First Online: 16 September 2019

Ethics approval and consent to participate

: Before venepuncture, patients or their parents or guardians provided written informed consent. The procedures for human serological diagnosis and etiological treatment (protocol no. TW-01-004) and the study of parasite diversity have been approved by the “Comité de Etica en Investigación Clínica” (Ethics Committee in Clinical Research) of Buenos Aires, Argentina. All clinical investigations were conducted according to the principles expressed in the Declaration of Helsinki. Animal care and use were performed according to guidelines issued by the Animal Care and Use Committee at the Faculty of Exact and Natural Sciences, University of Buenos Aires, which is based on the International Guiding Principles for Biomedical Research Involving Animals, developed by the Council for International Organizations of Medical Sciences.Archived serum samples that had been obtained during ongoing field work by trained technical staff and stored at the University of Buenos Aires were used. Further work and secondary data analysis on these samples was approved by the London School of Hygiene and Tropical Medicine Ethics Committee.

: Not applicable.

: The authors declare that they have no competing interests.