NURSING ANM AND GNM

Detailed explanation-1: -It is essential to understand that only certain species of hosts or certain cells can serve as hosts for viruses or bacteria. Host cells that allow viruses or bacteria to invade them are called permissive cells.

Detailed explanation-2: -Indeed, viruses have the remarkable ability to spread from one host to another host, hosts that belong to the three cellular domains of life-Archaea, Bacteria, and Eukarya. This constitutes their host range.

Detailed explanation-3: -Viral entry is the earliest stage of infection in the viral life cycle, as the virus comes into contact with the host cell and introduces viral material into the cell.

Detailed explanation-4: -A virus is a tiny, infectious particle that can reproduce only by infecting a host cell. Viruses “commandeer” the host cell and use its resources to make more viruses, basically reprogramming it to become a virus factory. Because they can’t reproduce by themselves (without a host), viruses are not considered living.

Detailed explanation-5: -First, a virus finds an entry point on the surface of a host’s body, typically in the respiratory tract, including the mouth and nose. This is by far the most common route, particularly for pathogens such as rhinoviruses, coronaviruses, and influenza viruses.