because when it enter in body they become live and produce disease's out body they not produce disease.
macrophages engulf, or eat , any microorganisms or viruses that enter your body
The easiest way to understand how viruses replicate is to study the life cycles of viruses called bacteriophages (bacteria eaters). Bacteriophages replicate by either a lytic cycle or a lysogenic cycle. The difference in these two cycles is that the cell dies at the end of the lytic cycle or the cell remains in the lysogenic cycle. The virus remains "hidden".
Infection with a pathogen does not necessarily lead to disease. Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply.
Impetigo can cause other diseases by weakening the immune system, allowing other forms of bacteria and viruses to enter the body.
E. Latency is not involved in the reproduction of all viruses. While many viruses may enter a latent phase where they remain inactive within a host, not all viruses undergo latency as part of their reproductive cycle. The other options—attachment and penetration, replication and synthesis, release, and assembly—are essential steps in the viral life cycle for most viruses.
Living organisms that cause disease are known as pathogens. These can include bacteria, viruses, fungi, parasites, and prions. Pathogens can enter the body through various means and lead to infections that result in illness.
Pathogens. These are typically bacteria, viruses, fungi, or parasites that can cause disease by invading the body's tissues. Common examples include influenza viruses, E. coli bacteria, and malaria parasites.
Viruses can multiply either through the lytic cycle, where they infect a host cell and use its machinery to produce new viral particles that eventually burst out of the cell, or through the lysogenic cycle, where the viral DNA integrates into the host cell's DNA and replicates along with it until conditions trigger the virus to enter the lytic cycle.
actually the body does nothing to diseases. BUT. its what diseases do to tha body. thus, the body contracts all sorts of disease and viruses. when these foreign bodies (disease and virus ) enters the body, it is destroyed by white-blood cells which is the human bodys' main defence against viruses and diseases that wants to enter the body to make u i'll.
No medicinal cures, only your body's B and T-cells remembering and attacking the disease causing viruses the next time they show up... This poses a problem with viruses that mutate often as well as viruses like HIV that enter cells and reprogram the DNA inside the cells making them multiply with more and more bad copies of DNA...
A disease that originates outside the body is an infectious disease caused by pathogens such as bacteria, viruses, or parasites. These pathogens can enter the body through various routes such as air, water, food, or direct contact with an infected person.