ebola virus (ebov) is an enveloped virus including a negative single strand genome in its virion with cylindrical/tubular morphology. ebov is the causative agent of ebola virus disease (evd), which is also involved in the outbreak observed in central africa since 1976. evd is a complex zoonotic viral disease which is highly virulent in human. the transmission of ebola infection is not usually h...

The Coronavirus disease 2019 (COVID-19) was identified in late 2019 and has gradually spread to all countries. Following the outspread of this virus as a community-acquired disease, many researchers have been trying to identify various factors involved in the transmission of the virus, as well as the ways to prevent its transmission from person to person. For example, researchers have found tha...

in this paper we study the dynamics of hepatitis b virus (hbv) infection under administration of a vaccine and treatment, where the disease is transmitted directly from the parents to the offspring  and also through contact with infective individuals. stability of the disease-free steady state is investigated. the basic reproductive rate, $r_0$, is derived. the results show that the dynamics of...

introduction: foot-and-mouth disease (fmd) is a highly contagious and economically devastating viral disease of livestock that is categorized in list a of animal diseases by the world organisation for animal health (oie). vaccination is effective against fmd and the vaccine production centers largely use the industrial ultra-filtration and chromatography in order to remove the cellular proteins...

conclusions saturated fatty acids (sfas) served as a potential ligand for tlr4 and activated tlr4 signaling pathway, which might be involved in the pathogenesis. thus, sfas can accelerate the mechanism of inhibiting hbv replication in chb with nafld. objectives this study aimed to investigate whether the tlr4-mediated innate immunity stimulates the pathogenesis of chb in patients with nafld and...

Pneumoviruses are responsible for significant respiratory disease in their hosts and represent a major problemfor human and animal health. Pneumoviruses are members of the family Paramyxoviridae, subfamilyPneumovirinae and the virus particles consist of a negative-sense, nonsegmented RNA genome within a helical nucleocapsid structure enveloped in a lipid membrane derived from the ho...

Newcastle disease (ND) is a highly contagious disease that affects many species of birds and causes significant economic losses to the poultry industry worldwide and the pathogenicity of Newcastle disease virus (NDV) strains varies with different virulence. Samples were collected from chicken commercial farms in Iran during 2014–2015. ND virus were characterized (NDV) by partial sequences...