Norwalk Virus (Norovirus)- An Overview

Structure and Genome of Norwalk Virus

Structure of Norwalk Virus (Norovirus) The virus is non-enveloped, round, 27-nm particles with a ‘ragged’ outer edge but lacking a definite surface structure. It has a buoyant density of 1.33–1.41 g/cm3, … Read more

Mumps Virus- An Overview

Mumps Virus

Structure of Mumps Virus Mumps virions are markedly pleomorphic (100 to 600 nm), and roughly spherical with an outer membrane that envelops an inner, coiled helical structure. The envelope which … Read more

Coronavirus- An Overview

Coronavirus

Structure of Coronavirus Coronaviruses fall in the virus family Coronaviridae, order Nidovirales. Coronaviruses are enveloped, 120 to 160 nm particles that contain an unsegmented genome of single-stranded positive-sense RNA (27–32 kb). … Read more

Varicella Zoster Virus- An Overview

Varicella Zoster Virus

Structure of Varicella Zoster Virus Image Source: Creative Diagnostics Varicella-zoster virus (VZV) is an alphaherpesvirus that is in the same subfamily as herpes simplex virus (HSV) 1 and 2. VZV … Read more

How viruses cause disease?

How viruses cause disease

Viruses gain access to the host through skin and mucous membranes, and via the respiratory, gastrointestinal, and genital tracts. Their virulence or lack of it may be determined by very … Read more