In this article we will discuss about the replication of influenza viruses. Influenza virus is transmitted from infected mammals through the air by sneezing. Sneezing creates aerosols which consist of several virus particles. Besides, influenza is also transmitted by saliva, nasal secretions, blood and faeces. Moreover, it also spreads through droppings of infected birds. These bodily fluids or contaminated surfaces [...]
In this article we will discuss about the replication of reoviruses. The virus can enter the host cell via a receptor on the cell surface. The receptor is not known but is thought to include sialic acid (haeinagglutination, broad cell tropism), and junctional adhesion molecules (JAMs). Virus particles are internalized and partially uncoated by proteases in the endo-lysosomes/lysosomes in the [...]
In this article we will discus about the classification of animal viruses. Baltimore (2008) classified the animal viruses in the following seven groups according to the relationships between virion, nucleic acid and mRNA transcription Table (17.1). The RNA within the virion is known as plus (+) or sense strand because it acts as mRNA, whereas the newly synthesized RNA which [...]