Type
Essay
Pages
9 pages
Word Count
1222 words
School
Baylor UNiversity
Course Code
PUBH 1145

Immunity And Stis

June 15, 2021
CHAPTER 14: IMMUNITY AND INFECTION
Endemic The habitual presence of a disease in a specified area
_Epidemic__ Occurrence of disease in excess of normal expectancy
Pandemic A global epidemic
The Spread of Disease
Phase 1: _Incubation__
Symptoms may or may not appear
Can be contagious
Phase 2 & 3: “feel a cold coming on”
Symptoms appear
Defenses against infection: The immune system and vaccines
Immune system: body’s collective set of defenses against infection and diseases
Physical and chemical barriers are _the first line of defense__
Skin
Mucous membranes
Respiratory tract
The inflammatory response
One 2nd line of defense
Non-specific
Localized infections
The cell-mediated immune response
3rd line of defense
Specific
__Lymphocytes___: a type of white blood cell involved in the immune response
Viruses, fungi, parasites, and some bacteria
Allergies
Result of a __hypersensitive__ and overactive immune system
Reacts to a harmless substance as if it’s a harmful pathogen
Allergens
__Pollen__
Animal dander
Dust mites and cockroaches
Molds and mildew
Foods
Insect stings
Vaccinations/Immunizations
Helps the body to remember an encounter with a specific antigen
Types of immunity
__Active immunity___: a person produces his or her own antibodies to the
microorganism
Passive immunity: injection of antibodies produced by other human beings
or animals who have recovered from a disease
Pathogens- Disease-causing agents
Bacteria
Simple, single-celled microscopic organisms
Produce toxins that cause disease
_Normal flora___ harmless or helpful bacteria that naturally inhibit a person
Viruses
Smallest known pathogens
Consists of __protein structure__ with RNA or DNA
Needs a host cell to reproduce
Fungi
Single- or multicellular organisms
Transmit: physical contact
Protozoans
Single-celled microscopic organisms
Prevention and treatment
Know your controllable risk factors!
Symptom relief
__viruses___
Antibiotics
___bacteria___
Rest and fluids
A microorganism that causes disease is a(n)
a) Pathogen
b) Antigen
c) Toxin
d) Antibody
Sexually Transmitted Infections
There are more than 20 known types of STIs.
110 million Americans currently infected
20 million Americans become newly infected each year
More than 65 million people live with an _incurable_ STI.
CDC estimates that undiagnosed STIs cause 24,000 women to become infertile each year
1 in 2 chance of getting an STI by age 25 in the U.S.
STIs are more prevalent among __teens and young adults__.
Untreated, STIs can have grave consequences, such as sterility, blindness, central nervous
system destruction, and even death.
CDC estimates that 24,000 women in America will become infertile each year due to
untreated and undiagnosed STIs
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