the bacteria or virus enters the body

the body's response to an infection by showing redness, swelling, & pain

a disease that is spread through pathogens (bacteria or virus)

an agent (something that makes an effect) that invade the body and cause you to be sick.

single-celled organisms (life forms) that can be treated with medication

tiny pathogens that survive and replicate (make copies) only inside living cells; and they cannot be killed with antibiotics

the bacteria or virus begins to multiply (getting worse)

begins to appear and the effects of the disease are beginning to be recognized (symptoms show)

the person is sick

person fighting off the disease, getting better

system that protects the body against infection (the white blood cells make antibodies)

knows that there is a infection in the body and alerts the rest of the body

the body moves white blood cells to fight off the infection and works to keep the disease from multiplying (getting worse)

the white blood cells work to get rid of the disease

this builds up protection allowing our bodies to respond to diseases quicker

a vaccine is a shot used to help prevent developing a specific disease

another word for immunization