1. Preventing Infectious Diseases
Chapter 28, Lesson 3
Preventing Infectious Diseases

2. Immunity Active Immunity Passive Immunity Long term protection
Remembers the pathogens it meets
Last lifetime
Passive Immunity
Temporary that an infant gets from its mother

3. Immunization Passive Immunization Active Immunization
Immediate, short-term protection
Take blood from infected person or animal
Blood contains antibodies
Inject into non-infected person
Active Immunization
AKA – vaccination
Pathogen introduced into body
Strong enough to make body produce antibodies
Not strong enough to make person sick

4. Vaccine Types Live-virus Killed-virus Toxoids
Made from weakened viruses
Virus cannot cause the disease, can stimulate antibody production
Killed-virus
Can stimulate antibody production
Cannot cause illness
Not as strong as live-virus vaccines
Toxoids
Chemically treating bacteria to release toxins
Release stimulates production of antibodies

5. Immunization for All In some cases it is the law School
Many disease have been controlled or eradicated
Some getting lax
Diseases making a comeback

6. Common Sense Measures Avoid contact and avoid spreading pathogens
Keep body healthy
Bathe and shower
Avoid sharing utensils/water bottles
Store/prepare food properly
Wash hands after bathroom use
Keep away from people if sick
Avoid people that are sick or take protective measures

7. Homework Continue work on report – due Tuesday 4/28
Health Terms on page 642 (2)
Read pages 642 – 645
Review questions page 645 (1 – 5)