hiv
No, infectious agents don't always affect the same organ or tissue they have entered. For instance, chickenpox virus (varicella) enters the body through the mucous membranes of the upper respiratory tract, but spreads throughout the body.
human immunodeficiency virus
It protects against infectious agents such as fungi,bacteria and viruses.
Mucus is found in the respiratory system of humans. The function of mucus is to protect the body from infectious agents such as viruses and bacteria.
naturally present or originate within the host's body, such as bacteria or viruses. These agents can cause diseases when they disrupt the body's normal functioning and immune response.
By coming in direct contact with people that have the disease, or if the nature of the illness is such that the infectious agent can survive outside the body by making contact with those infectious agents where they are left by the carriers of the disease.
What happens in our body when we have an infectious disease
The slimy secretions in the lungs that protect it from dust and infectious agents are called mucus. Mucus traps particles like dust and pathogens, preventing them from entering deeper into the lungs. The cilia in the respiratory tract then move the mucus upwards so it can be expelled from the body.
I'm at not sure about this! But in most cases the body will expel naturally or they may have to vaccum the contents out (this is similar to what is used in an abortion).
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Flu viruses cause disease, they cause influenza (flu). They are the infectious agents of the flu. The viruses are submicroscopic organisms that infect your body and that give you the influenza, the disease.