1 Internal Medicine Department, "Ruíz y Páez" University Hospital Complex, Ciudad Bolívar, Venezuela; Biomedical Research and Therapeutic Vaccines Institute, Ciudad Bolívar, Venezuela.
2 Internal Medicine Department, "Ruíz y Páez" University Hospital Complex, Ciudad Bolívar, Venezuela.
3 Biomedical Research and Therapeutic Vaccines Institute, Ciudad Bolívar, Venezuela.
4 Tropical Medicine Institute, Faculty of Medicine, Central University of Venezuela, Venezuela.
5 Global Development One (GDO), Maryland, United States; Asociación Civil Impacto Social (ASOCIS), Tumeremo, Venezuela.
6 Biomedical Research and Therapeutic Vaccines Institute, Ciudad Bolívar, Venezuela. Electronic address: vacter.cv@gmail.com.