Transcript Deadly Diseases Among Us

 Emerging
infectious diseases = diseases
that have not occurred in humans before
or that occurred only in small numbers in
isolated places.
 Re-emerging infectious diseases =
diseases that once were major health
problems globally or in a particular
country and then declined but are
becoming a problem in significant
numbers
 In
developing countries infectious
diseases remain the leading cause of
death
 In the U.S. prevention and control of
infectious diseases have so successful
that many people view them to be a thing
of the past except among very young,
very old, or seriously ill people.
 E. coli
strain caused sever vomiting and
diarrhea for patrons of Jack in the Box
restaurants in 1993 in Washington State
and among children in swimming pools
in Atlanta in 1998
 Ebola was first described in 1976 in Zaire
Africa with a fatality rate of 50 -90%
 Sanitation
 Sewage
treatment
 Vaccination programs
 Access to good medical care including
antibiotics
 Still some diseases are making a
comeback!!!
 Immunization
programs are enforced less
vigorously
 Antibiotic-resistant pathogens are
evolving
 Some strains of Staphylococcus aureus are
resistant to all known antibiotics
 What
disease do you think is the greatest
threat to students in this class?
 What disease do you think is the greatest
threat to the world’s population?
 Record your thoughts in your notebooks
and also think about why???
 Make
well-educated guesses if you do
not know the answers to this quiz.
 1. C
 2. D
 3. C
 4. B
 5. D
 6. D
 Each
group of 2 students should get a set
of disease cards.
 Sort the cards into piles that represent
different type of infectious agents.
 Record your results and then discuss why
scientists find it useful to classify
diseases based on type of infectious
agents.
 Compare your results with the rest of the
class
 Now
resort your cards based on the
mechanism of transmission.
 Record your results and list reasons why
it might be useful to sort diseases this
way.
 Compare your results with the rest of the
class
 Sort
the disease cards according to
history of occurrence of the disease – you
might make two categories “new” and
“old”
 Record your results and compare with the
rest of the class
 Think about how you could rename the
categories “old and increasing” or “old
and remaining constant”
 Now
classify each disease at Emerging,
Re-emerging or Endemic
 Emerging = diseases that are truly new,
have recently affected enough of a
population to be noticed
 Health workers are becoming concerned
about the emergence of “new” and reemergence of “old” diseases - - Why??