Download Fighting Infectious Disease

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
Osmosis Jones Clip
Homework Due Monday

Complete Worksheet 35.3
Review
Basis is to differentiate between
domestic and foreign
 Domestic signals notify the Immune
System they are good for the body
 Foreign objects are unable to replicate
password
 Recognizing “self” is vital to the success
of the Immune System

Review

Humoral immunity is the action of
antibodies that circulate in blood and lymph
 “B Cells”

Cell mediated immunity defends the body
from viruses, fungi and other pathogens by
using macrophages and T Cells
 Surpressor T Cells keep the immune system in
check
○ Inhibit immune response once infection is under
control
Immunity
How can we create our own immunity?
 How does that work?

Vaccination
Cowpox prevented smallpox
 Vaccinations are injections of a
weakened form of a pathogen, to
produce immunity

Active Immunity
Vaccinations stimulate immune system
with antigens
 Immune system responds by producing
memory B cells and memory T Cells
 Quicken and strengthen response

Passive Immunity
Antibodies produced against a pathogen
by other individuals or animals can be
used to produce temporary immunity
 Antibodies then introduced into
individual’s blood.
 Only temporary
 Why do you think this is only temporary?

Venn Diagram

Please create a Venn Diagram between
Active Immunity and Passive Immunity
Infectious Disease
In 1900, 30% of deaths were due to
infectious disease
 In 2005, <5% were due to disease
 Decreases were because of Public
Health and development of medications.

Public Health
What kinds of public health measures to
you see today?
 Public vaccines
 Food and drug administration
 Food recalls
 Providing clean drinking water

Medications
While it is inevitable that sickness will
occur, medications are the second line
of defense
 Antibiotics kill bacteria
 Antiviral medications slow viral activity

 Inhibit the ability of viruses to invade cells or
multiply
New Diseases
AIDS
 SARS
 MonkeyPox
 West Nile Virus
 Ebola
 Avian influenza (bird flu)

Ebola

Ebola in Africa
Homework Due Monday

Complete Worksheet 35.3