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• acquired immunodeficiency syndrome (AIDS) -✓✓a disease in which the immune
system is weakened
• acquired immunity -✓✓Immunity that the body develops after overcoming a disease,
through inoculation (such as flu vaccinations), or through exposure to natural allergens,
such as pollen, cat dander, and ragweed.
• antiseptics -✓✓Chemical germicides formulated for use on skin; registered and
regulated by the Food and Drug Administration (FDA).
• asymptomatic -✓✓Showing no symptoms or signs of infection.
• autoclave -✓✓A device for sterilization by steam under pressure.
• bacilli -✓✓Short rod-shaped bacteria. They are the most common bacteria and
produce diseases such as tetanus (lockjaw), typhoid fever, tuberculosis, and diphtheria.
• bacteria -✓✓One-celled microorganisms that have both plant and animal
characteristics. Some are harmful; some are harmless.
• bactericidal -✓✓Capable of destroying bacteria
• binary fission -✓✓The division of bacteria cells into two new cells called daughter cells.
• bioburden -✓✓The number of viable organisms in or on an object or surface or the
organic material on a surface or object before decontamination or sterilization.
• bloodborne pathogens -✓✓Disease-causing microorganisms carried in the body by
blood or body fluids, such as hepatitis and HIV.
• body substance isolation (BSI) precautions -✓✓A system of precautions developed by
a Seattle hospital in 1987 to prevent contact with bodily substances and fluids by using
protective apparel to prevent the spread of contamination.
• chelating soaps -✓✓AKA chelating detergents; detergents that breakdown stubborn
films and remove the residue of products such as scrubs, salts, and masks.
, • clean -✓✓A mechanical process (scrubbing) using soap and warm water or detergent
and water to remove all visible dirt, debris, and many other disease-causing germs.
Cleaning also removes invisible debris that interferes with disinfection.
• cocci -✓✓Round-shaped bacteria that appear singly (alone) or in groups. The three
types of cocci are staphylococci, streptococci, and diplococci.
• contagious disease -✓✓AKA communicable disease; a disease that is spread from
one person to another person.
• contamination -✓✓The presence, or the reasonably anticipated presence, of blood or
other potentially infectious materials on an item's surface or visible debris or residues
such as dust, hair, and skin.
• cross-contamination -✓✓Contamination that occurs when you touch one object and
then transfer the contents of that object to another, such as touching skin, then touching
a product without washing your hands.
• decontamination -✓✓The removal of blood or other potentially infectious materials on
an item's surface and the removal of visible debris or residue such as dust, hair, and
skin.
• dermatophytes -✓✓A type of fungi that causes skin, hair, and nail infections.
• diagnosis -✓✓Determination of the nature of a disease from its symptoms and/or
diagnostic tests. Federal regulations prohibit salon professionals from performing a
diagnosis.
• diplococci -✓✓Spherical bacteria that grow in pairs and cause diseases such as
pneumonia.
• direct transmission -✓✓Transmission of blood or body fluids through touching
(including shaking hands), kissing, coughing, sneezing, and talking.
• disease -✓✓An abnormal condition of all or part of the body, or its systems or organs,
that makes the body incapable of carrying on normal function.
• disinfectants -✓✓Chemical products that destroy all bacteria, fungi, and viruses (but
not spores) on surfaces.
• disinfection -✓✓AKA disinfecting; the process that eliminates most, but not necessarily
all, microorganisms on nonporous surfaces. This process is not effective against
bacterial spores.