The host doesnt show symptoms and the carrier does
Carrier is a host carrying a disease without symptoms
The reservoir is an animal who preserve the pathogens
The difference between HIV and AIDS is that HIV is the virus that causes the disease AIDS. You can be a carrier of the HIV virus and not contract the disease but you can infect others.
A vector carries the disease but doesn't show any symptoms.
Chronic hepatitis B is a liver disease caused by a virus. Being a carrier of hepatitis B means that you are infected with the virus and can transmit it to others, but you may not have the disease
Because charity begins at home, you have to be clean in order not to be a reservoir in the chain of infection if you not clean you can be a disease carrier
An endemic disease is one that is continuously present in the population, often because there is a non-human reservoir for the microbe that causes it. An epidemic disease is one that spreads in a sudden, massive surge within a population that is largely without immune protection.
Any agent that is capable of causing a disease is called as a pathogen. Vector is a DNA molecule carrying the gene of interest from one bacteria to the other to form a transformed cell.
Plague is one form of infectious disease.
Disease reservoir functions as a potential source of disease outbreak. This must be distinguished from vectors and carriers which are means of disease transmission.
Disease is any change from a state of health; impaired body function.
A person who harbors a disease is called a carrier. Often, disease do not manifest in the carrier - they manifest in the descendants of the carriers.
Every disease is an illness but not every illness is a disease (A disease is not a virus, parasite, etc but an illness could be)
This person is called a carrier. Some carriers do not show any signs of the disease but others do (as someone with a cold).