They can cause many different illnesses.
Contagious or communicable.
sexually transmitted disease or STD
Diseases that can be passed to anther person would be those communicable diseases specifically those that can be contracted through infected fluids of the body, infected food and the like.
because disease is not always spread through humans it can also be spread through animals, water that has be contaminated with feces and food. There are many ways for diseases to be spread
Because non-communicable diseases are not passed from one person to another - communicable diseases are.
Germs that spread from person to person to cause diseases are contagions.People who are then infected with the germ, only during the active phase of the germ's "life", are then referred to as being contagious.
i think meningitis
sexually transmitted disease or STD
Diseases that can be passed to anther person would be those communicable diseases specifically those that can be contracted through infected fluids of the body, infected food and the like.
Through their genes - or during pregnancy ! Many diseases can (and usually are) passed down from the mother to the foetus through the umbilical cord.
Communicable or Contagious.
Infectious diseases spread either by person to person contact, or indirectly by a vector or a fomite.
because disease is not always spread through humans it can also be spread through animals, water that has be contaminated with feces and food. There are many ways for diseases to be spread
One of theses is Cancer.
Non communicable diseases, such as cancer, are not contagious and are therefor not passed from person to person. Communicable diseases such as TB or AIDS can be passed around from person to person. So of course, that would be the reason for the spreading.
Contact to a person directly, or indirect contact with a person such as touching a door knob after a sick person touched it
Communicable diseases are diseases that can be passed from one person to another. These include all STDs, such as AIDS, as well as many other diseases.
yes they can be ingested via digest tract, inhaled whilst breathing passed on through direct contact ( touching infected person, sexual contact) passed on through indirect contact (touching an object that an infected person has touched previously) injected by anything that pierces the skin (needles insect bites)