a virus can ony reproduce inside a living cell that surves as a host. A Host is living thing that a virus or parasite lives on or in . Using a host's cell as a tiny factory , the virus forces the host to make viruses rather than healthy new cells.
Viruses do not cause diseases in the host. Why? Well, the host is already causing the virus so it is IMPOSSIBLE for another virus to be cause in the host.
Stomache virus
yes
It kills the host bacteria. I don't believe it occurs in eukaryotic cells.
A latent virus remains dormant in the host cell without causing symptoms, but can reactivate later to cause disease. An active virus continuously replicates and causes symptoms, leading to an active infection. Both types of viruses can cause disease, but latent viruses have periods of inactivity while active viruses are constantly causing symptoms.
Pathogenic means "having the ability to cause disease".
A micro-organism, such as a bacterium, a virus or a fungus, that invades a host and causes a disease is called a pathogen.
A virus that kills its host is said to be virulent. Virulent viruses can cause serious illness or death in their host organisms.
HIV is the virus. AIDS is the disease caused by the virus. (So HIV is not actually a disease per se.) As an analogue - the H1N1 virus can cause the flu.
Immediate cause is the first cause identified when a person is suffering from a disease. For example, if a baby is suffering from loose motions,we can say that the cause of the loose motions is an infection with a virus. So, the immediate cause of the disease is virus.
One example of a virus that doesn't immediately affect a host cell's function is the herpesvirus. After initially infecting cells, herpesvirus can remain dormant in the host's body for years without causing symptoms. It can later reactivate and cause disease.
Respiratory tract