Infection and response pt1 Flashcards
What is a communicable disease?
an infection disease
What causes communicable diseases?
pathogens
What are pathogens
microorganisms that enter the body and cause disease
How do pathogens spread?
direct contact
water
air
vectors
What are vectors?
organisms that carry pathogens
How are pathogens spread by water?
by drinking infected water
How are pathogens spread by air?
pathogens can be carried in the air and people breathe it in
How can the spread of disease can be reduced or prevented ? (4)
Being Hygenic
destroying vectors
isolated infected individuals
vaccinations
What are the differfent types of pathogens?
virus
fungi
bacteria
protists
What do viruses do ?
reproduce rapidly in body cells causing damage to the cells
- The cell will usually then burst to release
all the new viruses. - This cell damage makes you feel ill
What is measles
Measles is a viral disease showing symptoms of fever and a red skin rash. Measles is a serious illness that can be fatal if complications arise. For this reason most young children are vaccinated against measles.
How is measles spread?
by breathing in droplets from an infected person’s sneezes or cough
What is HIV
when the body’s immune system is badly damaged and cannot fight off other infections or cancer.
How is HIV spread?
by sexual contact or exchange of bodily fluids
What happens when HIV is untreated?
the virus enters the lymph nodes and attacks the body’s immune cells