1 Department of Laboratory Medicine, Faculty of Medicine and Health Sciences, Hodeidah University, Hodeidah, Yemen; Laboratory of Virology, University of Helsinki, Helsinki 00014, Finland. Electronic address: fathiah_zakham@yahoo.com.
2 Laboratory of Virology, University of Helsinki, Helsinki 00014, Finland.
3 Laboratory of Molecular and Chemical Biology of Neurodegeneration, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.