Infection Control
Principles of Infection
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Key
Terms
Infection Control
Microbiology
BACTERIA
1. Nonpathogenic (Bacteria)
2. Pathogenic (Bacteria)
Saprophytes
CLASSIFICATIONS OF PATHOGENIC BACTERIA.
Cocci
Staphylococci
Streptococci
Diplococci
Bacilli
Spirilla
Infection Control
Infection control is the term used to describe efforts to
prevent the spread of disease and kill certain or all
microbes
Chapter 2.2
Salon Ecology
Infection Control
Point to think about!
 Have you ever lived with or visited someone that was a sloppy
housekeeper?
 Or
Have you been the babysitter for children that refused to pick
up their toys when requested?
Microbiology
A
B
Does photo A or B illustrate a healthy, infection-free, safe
environment?
Chapter 2.1
Salon Ecology
Microbiology
Microbiology
A
Photo A displays a healthy, infection-free, safe environment.
Chapter 2.1
Salon Ecology
Microbiology
Microbiology
The study of small organisms
micro (small)
bio+(living)
ology+ (study)
microbiology
AWhy
basic knowledge
of of
microbiology
is important
in preventing
the
is the study
microbiology
important
to
spread
of disease through proper disinfection within the salon.
a cosmetologist?
Chapter 2.1
Salon Ecology
Microbiology
BACTERIA
 Minute, one-celled vegetable microorganisms
found nearly everywhere.

Also known as germs or microbes.
 :::Prominent in dust, dirt, refuse, and diseased tissues.
 They can exist almost anywhere and can only be seen through a
microscope.
Bacteria
Generally classified as two types:
Nonpathogenic
Pathogenic
Bacteria that do not
produce disease
Bacteria that do produce
disease
Chapter 2.1
Salon Ecology
Microbiology
Bacteria
Nonpathogenic
•
•
•
•
•
Harmless
Can be beneficial
Many live on surface of
skin
Saprophytes live on
dead matter
70% of all bacteria
Pathogenic
•
Cause infection
and disease
•
•
•
•
Distinct shapes
Some produce toxins
Spread easily
Live everywhere
Chapter 2.1
Salon Ecology
Microbiology
• Saprophytes
• live on dead matter
• Non pathogenic
Just to help you remember
• Saprophytes are bacteria that have the sap
knocked right out of them, so weak they
cannot produce disease. There is no fight
left in them
Bacteria
Pathogenic Bacteria
1.
Cocci
Round
Appear in groups or
singularly
Staphylococci
Bunches
Found in boils
Pus-forming
Streptococci
Long chains
Diplococci
Pairs
Cause strep throat
Pus-forming
Cause pneumonia
2.
Bacilli
Rod
Most common form of
bacterial cells
3.
Spirilla
Spiral
Causes syphilis,
lyme disease,
cholera
Chapter 2.1
Salon Ecology
Microbiology
1.Cocci
1. Round-shaped
that appear singly or in the following groups.
All the letters but i are rounded or circular. Cocci starts with
a "c", as does circular.
.
Staphylococci
Pus-forming bacteria that grow in
clusters like grapes;
cause
abscesses, pustules, and boils
Staphylococci form a bunch (like grapes) and
"boil" up trouble by causing boils.
the "staff" form a "bunch" and "boil" up
trouble.
Streptococci.
Pus-forming bacteria arranged in curved lines
resembling a string of beads;
Cause
infections such as strep through and blood poisoning
Diplococci
Spherical bacteria that grow in pairs and
cause
diseases such as pneumonia
The word diplococci includes "diplo" which means two.
draw 2 circles side by side and then draw them coughing.
Bacilli
Short rod-shaped bacteria
They are the most common and
produce diseases such as tetanus,
typhoid, tuberculosis, and
diphtheria.
rod shaped and cause fevers, so the term
"hot rod" Hot Rod
Spirilla
Spiral or
corkscrew-shaped bacteria.
They are subdivided into subgroups:
which causes syphilis (an STD) or lime
disease.
corkscrew in shape, like a slinky or spiral c
Microbiology Self-Check
Identify the type of pathogenic bacteria
Grow in pairs and can
cause pneumonia
Diplococci
1. _______
Most common form of
bacterial cells
Bacilli
2. _______
Pus-forming cells that
form bunches; found in
boils
Staphylococci
4. ________
Spiral-shaped cells that cause
syphilis, and lyme disease
Spirilla
5. ________
Pus-forming cells that form
long chains; cause strep
throat
3. ________
Streptococci
Chapter 2.1
Salon Ecology
Microbiology
Key Terms
 Growth cycle of bacteria (Inactive)
 Growth cycle of bacteria (Active stage)
 Cocci (go back to yesterdays card)
 flagella or cilia
 Bacilli and spirilla ( go back to yesterdays cards)
 Mitosis
 Daughter cells
Growth of Bacteria
Growth Cycle
Active Stage
Inactive Stage
•
•
Reproduce and
grow rapidly
• Require dark, damp, dirty
• Form spores not harmed
places with food
•
Divide into two new cells
(mitosis)
No growth occurs when
conditions are unfavorable
by disinfectants, cold or heat
•
Become active when conditions
are favorable
Chapter 2.1
Salon Ecology
Microbiology
Active growth
 Cocci Rarely
 show motility (self-movement); transmitted in air, dust, or in
the substance in which they settle.
Mitosis
 They then divide into two new cells.The division is called
mitosis

 Daughter Cells
 the new cells are called daughter cells.

Growth of Bacteria
Movement of Bacteria
Bacilli and spirilla use flagella
(cilia) to propel themselves
Chapter 2.1
Salon Ecology
Microbiology
(Bacilli and Spirilla)
flagella or cilia
 Motile and use slender, hairlike extensions known as flagella or
cilia
 For locomotion A whip like motion of these hairs moves the
bacteria in liquid.
Growth of Bacteria
Growth Cycle
Active Stage
Inactive Stage
•
•
Reproduce and
grow rapidly
• Require dark, damp, dirty
• Form spores not harmed
places with food
•
Divide into two new cells
(mitosis)
No growth occurs when
conditions are unfavorable
by disinfectants, cold or heat
•
Become active when conditions
are favorable
Chapter 2.1
Salon Ecology
Microbiology
•Inactive or spore-forming Bacteria
. Such as anthrax and tetanus bacilli form spherical
spores with tough outer coverings which are resistant
to adverse conditions.
**Therefore, even bacteria in the inactive stage can
ultimately be a Threat to the spread of disease or
infection in the salon
Microbiology Self-Check
Identify the type of pathogenic bacteria
Grow in pairs and can
cause pneumonia
Diplococci
1. _______
Most common form of
bacterial cells
Bacilli
2. _______
Pus-forming cells that
form bunches; found in
boils
Staphylococci
4. ________
Spiral-shaped cells that cause
syphilis, and lyme disease
Spirilla
5. ________
Pus-forming cells that form
long chains; cause strep
throat
3. ________
Streptococci
Chapter 2.1
Salon Ecology
Microbiology
Microbiology Self-Check
What’s your answer?
A. Nonpathogenic
or
• 70% of all bacteria
• Produce disease
• Include saprophytes
• Harmless
B. Pathogenic
A
B
A
A
Chapter 2.1
Salon Ecology
Microbiology
Microbiology Self-Check
On a sheet of paper numbered 1-4
answer the following questions.
What’s your answer?
A. Active Bacteria
or
B. Inactive Bacteria
1. Grow rapidly
2. Exhibit mitosis
3. Form spores
4. Stop growing
Chapter 2.1
Salon Ecology
Microbiology