1 "José María Vargas" School of Medicine, Central University of Venezuela, Caracas, Venezuela; Infectious Diseases Department, Vargas Hospital of Caracas, Caracas, Venezuela.
2 "Luis Razetti" School of Medicine, Central University of Venezuela, Caracas, Venezuela; Infectious Diseases Department, University Hospital of Caracas, Caracas, Venezuela.
3 "Luis Razetti" School of Medicine, Central University of Venezuela, Caracas, Venezuela; Biomedical Research and Therapeutic Vaccines Institute, Ciudad Bolivar, Venezuela.
4 Infectious Diseases Department, Vargas Hospital of Caracas, Caracas, Venezuela.
5 "Luis Razetti" School of Medicine, Central University of Venezuela, Caracas, Venezuela; Infectious Diseases Department, University Hospital of Caracas, Caracas, Venezuela; Biomedical Research and Therapeutic Vaccines Institute, Ciudad Bolivar, Venezuela. Electronic address: vacter.cv@gmail.com.