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Transcript of Communicable Diseases
What are Communicable Diseases? Pp.622-626
-disease that is spread from one living thing to the next
-Knowing how they spread can help protect you!
Causes of communicable diseases
an organism that causes disease
- condition that occurs when pathogens enter the body, multiply, and damage cells
disease occurs when the body
cannot fight off the infection
pieces of genetic material surrounded by a protein coat
Invades all forms of LIFE
needs living cells to reproduce
a virus penetrates a cell, reproduces, ruptures the cell usually killing it and invades other cells
single-cell microorganisms that LIVE everywhere on earth
Some produce - a substance that kills cells or interferes with their function
kills most bacteria
are used to kill bacteria
: plant-like organism like mold or yeast.
What are some examples?
: single-celled organism that is more complex than bacteria
: pathogens that resemble bacteria. The invade cells and are usually passed by insect bites
ACTIVITY = WOOOO!!!
How Communicable Diseases are Transmitted
Contact with infected person, animal, or object in the environment
Mother to Unborn Child
Kissing your bf/gf when they're sick.... are you serious?
Sometimes you don't have to be near an infected person to get sick.
objects like door handles, tables, bathrooms, phones, and desks can become contaminated if an ill person touches them.
Water and Food
mosquito or ticks
can carry and infect people
s n e e z e a c t i v i t y
Pathogens from a SNEEZE or COUGH may float in the air
chicken pox, flu, and TB can all be transmitted through the air
Strategies for Preventing Diseases
Wash your hands well and often.
What are some of the items you can come in contact with daily where you should wash your hands?
Handle food properly…we will talk more about that later!
Use bug spray during peak seasons.
Avoid unnecessary contact with the ill
Eat a balanced diet and exercise
Abstinence from sexual activity
Immune System - a network of CELLS, tissues, organs, and chemicals that fight off infection
Physical and Chemical Barriers
What is the first line of defense the body has?
very few pathogens can penetrate the tough, outer skin
Tears and saliva
have enzymes that destroy pathogens
Produce mucous to trap pathogens
small hair-like projections that help trap mucous
stomach acid kills most pathogens entering
through the nose or mouth
Care of the Immune System
Good diet and plenty of water
Get plenty of sleep
Avoid sharing items [towels, makeup, and toothbrushes]
Avoid sexual contact [HIV destroys the immune system]
Get your shots
today, vaccines prevent diseases that used to kill
some vaccines have to be redone with time, Tetanus Shots!
Keep up to date with all vaccines or you could
yourself or others!
There are many laws governing vaccines
Antibiotics are becoming less effective!!!
1. Over Prescribed by Doctors
2. Doctors prescribe them for Virus
3. We ingest them in our food
ex: Cause of Common Cold and Flu
Our body's defense system
- an effect that is not intended
- combining two or more drugs and it
increase the effects
- combining two or more drugs and the
effect of one drug cancels or masks the
effect of the other