1. Who tracks the spread of contagions?

2. What are the different ways infectious diseases are caused?

3. What are the different ways infectious diseases are caused?
GERMS/CONTAGIONS/PATHOGENIC PARASITES
viruses (smallest microorganism, hijacks its host)
bacteria (smallest LIVING microorganism-prokaryotic)
protozoa (bigger unicellular eukaryotic)
fungi (mostly multicellular eukaryotic)
larger parasites like worms & flukes,

4. What do we call an infectious contagion that spreads all over a large region or country?

5. What do we call an infectious contagion that spreads all over a large region or country?

6. What do we call an infectious contagion that spreads all over the EARTH?

7. What do we call an infectious contagion that spreads all over the EARTH?

8. A WORLDWIDE outbreak is a PANDEMIC!

9. A WORLDWIDE outbreak is a PANDEMIC!

10. A WORLDWIDE outbreak is a PANDEMIC!

11. A regional or nationwide outbreak is an EPIDEMIC.

12. A regional or nationwide outbreak is an EPIDEMIC.

13. PANDEMICS are GEOGRAPHICALLY LARGER!
EPIDEMIC
PANDEMIC

14. Nevertheless…

15. We call scientits who track the spread of a contagion EPIDEMIOLOGISTS

16. YESTERDAY, YOU were acting as an EPIDEMIOLOGIST when you did the Mapping Death activity.
?v=4sYSyuuLk5g
contagion trailer

17. How do EPIDEMIOLOGISTS classify a spreading disease?

18. How are pathogens spread here?
eeeeeeeewwww…

19. How are pathogens spread here?
sneezing

20. How are pathogens spread here?
sneezing

21. How are pathogens spread here?
sneezing
coughing

22. How PATHOGENS can be spread:
AIR-BORNE-by breathing someone’s germs

23. Do you remember how the deadly cholera bacteria can be spread?

24. Do you remember how the deadly cholera bacteria can be spread?

25. Do you remember how the deadly cholera bacteria can be spread?

26. How PATHOGENS can be spread:
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water

27. _______ are NON-HUMAN disease spreaders!
FLEAS
MOSQUITOS

28. VECTORS are NON-HUMAN disease spreaders!
FLEAS
MOSQUITOS

29. VECTORS are NON-HUMAN disease spreaders!
BIRDS
RATS

30. How PATHOGENS are spread:
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas, and more

31. IF A PERSON SPREADS A DISEASE BUT SHOWS NO SYMPTOMS…
THEY ARE A CARRIER.

32. IF A PERSON SPREADS A DISEASE BUT SHOWS NO SYMPTOMS…
THEY ARE A CARRIER.
TYPHOID MARY
first 2:28

33. How PATHOGENS can be spread:
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas and more
CARRIERS-human disease spreaders

34. If a CARRIER can only infect someone by exchanging fluids…
by contaminated needles
by sexual contact

35. How PATHOGENS can be spread:
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas and more
CARRIERS-human disease spreaders
Blood-borne-sexual contact/unclean needles

36. Sometimes CARRIERS can give someone a contagion more easily…
by sharing food & stuff
by touching, kissing

37. How PATHOGENS can be spread:
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas and more
CARRIERS-human disease spreaders
Blood-borne-sexual contact/unclean needles
Direct Contact-touching, kissing, sharing food or drink !

38. We can also catch infectious diseases on shared surfaces…
keyboards

39. We can also catch infectious diseases on shared surfaces…
keyboards
doorknobs

40. We can also catch infectious diseases on shared surfaces…
keyboards
CELL PHONES!

41. How PATHOGENS can be spread:
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas and more
CARRIERS-human disease spreaders
Blood-borne-sexual contact/unclean needles
Direct Contact-touching, kissing, sharing food or drink
Indirect Contact-touching surfaces that others contaminated

42. How PATHOGENS can be spread:
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas and more
CARRIERS-human disease spreaders
Blood-borne-sexual contact/unclean needles
Direct Contact-touching, kissing, sharing food or drink
Indirect Contact-touching surfaces that others contaminated
WHICH WAYS ARE HARDEST TO CONTROL?

43. How PATHOGENS can be spread:
HARD TO CONTROL
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas and more
CARRIERS-human disease spreaders
Blood-borne-through unprotected sex or unclean needles
Direct Contact-touching, kissing, sharing food or drink
Indirect Contact-touching surfaces that others contaminated
HARD TO CONTROL
HARD TO CONTROL
WHICH WAYS ARE HARDEST TO CONTROL?

44. How PATHOGENS can be spread:
HARDEST TO CONTROL
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas and more
CARRIERS-human disease spreaders
Blood-borne-through unprotected sex or unclean needles
Direct Contact-touching, kissing, sharing food or drink
Indirect Contact-touching surfaces that others contaminated
HARD TO CONTROL
HARD TO CONTROL
WHICH ONE IS THE HARDEST TO CONTROL????

45. How PATHOGENS can be spread:
AIR-BORNE-by breathing someone’s germs
WATER-BORNE-germs in contaminated water
VECTORS-non-human disease spreaders
rats, mosquitos, birds, fleas and more
CARRIERS-human disease spreaders
Blood-borne-through unprotected sex or unclean needles
Direct Contact-touching, kissing, sharing food or drink
Indirect Contact-touching surfaces that others contaminated
EASY TO CONTROL
EASY TO CONTROL
Why are WATER-BORNE and BLOOD-BORNE EASIEST for EPIDEMIOLOGISTS TO CONTROL?

46. How PATHOGENS can be spread:
VECTORS-non-human disease spreaders
WATER-BORNE-germs in contaminated water
AIR-BORNE-by breathing someone’s germs
DIRECT CONTACT-touching, sharing food & drink
INDIRECT CONTACT-touching shared objects
EASY TO CONTROL
EASY TO CONTROL
SO, EPIDEMIOLOGISTS FIRST ASK “HOW A GERM SPREADS” BEFORE MAKING A PLAN OF ATTACK.

47. Typhoid Mary RESISTED & was QUARANTINED.

48. Typhoid Mary RESISTED & was QUARANTINED.
QUARANTINES-separate carriers from the rest of society to keep the germ from spreading.

49. How PATHOGENS can be spread:
VECTORS-non-human disease spreaders
WATER-BORNE-germs in contaminated water
AIR-BORNE-by breathing someone’s germs
DIRECT CONTACT-touching, sharing food & drink
INDIRECT CONTACT-touching shared objects
HOW DO YOU THINK TYPHOID WAS SPREAD BACK IN THE EARLY 1900s IF QUARANTINES were EFFECTIVE????

50. How PATHOGENS can be spread:
VECTORS-non-human disease spreaders
WATER-BORNE-germs in contaminated water
AIR-BORNE-by breathing someone’s germs
DIRECT CONTACT-touching, sharing food & drink
INDIRECT CONTACT-touching shared objects
THAT’S CORRECT!!!
HOW DO YOU THINK TYPHOID WAS SPREAD BACK IN THE EARLY 1900s IF QUARANTINES were EFFECTIVE????

51. How PATHOGENS can be spread:
VECTORS-non-human disease spreaders
WATER-BORNE-germs in contaminated water
AIR-BORNE-by breathing someone’s germs
DIRECT CONTACT-touching, sharing food & drink
INDIRECT CONTACT-touching shared objects
Why wouldn’t quarantines be effective if the contagion spread by VECTORS????

52. How PATHOGENS can be spread:
PESTICIDES HELP HERE
VECTORS-non-human disease spreaders
WATER-BORNE-germs in contaminated water
AIR-BORNE-by breathing someone’s germs
DIRECT CONTACT-touching, sharing food & drink
INDIRECT CONTACT-touching shared objects
Why wouldn’t quarantines be effective if the contagion spread by VECTORS????

53. show malaria cartoon…

54. How PATHOGENS can be spread:
VECTORS-non-human disease spreaders
WATER-BORNE-germs in contaminated water
AIR-BORNE-by breathing someone’s germs
DIRECT CONTACT-touching, sharing food & drink
INDIRECT CONTACT-touching shared objects
filter & clean it
Quarantines won’t be effective if the contagion spread through water.

55. Typhoid Mary RESISTED & was QUARANTINED.
QUARANTINES-separate carriers from the rest of society to keep the germ from spreading…with DIRECT CONTACT cases.
Do you think this is fair?

56. Typhoid Mary promised to wash her hands regularly, to give up cooking as a career and choose a job with less risk.
Would you let her go back into society?

57. Typhoid Mary promised to wash her hands regularly, to give up cooking as a career and choose a job with less risk.
Would you let her go back into society?
They did.

58. She changed her name and began work as a laundry lady.
But a few years later, another Typhoid outbreak occured in NYC.

59. She changed her name and began work as a laundry lady.
But a few years later, another Typhoid outbreak occured in NYC.
Guess who was cooking AND not washing her hands again?

60. This time they quarantined Typhoid Mary for the rest of her life.

61. What should society do with “carriers” of deadly infectious diseases?
discussion point

62. Watch the following short Rattattouie movie on the history of the “BLACK DEATH” (a plague that nearly killed us during the middle ages).
Identify & write down the CARRIERS, VECTORS, PARASITES AND CONTAGIONS/PATHOGENS

63. VECTOR-BORNE DISEASES
MALARIA- mosquitoes carry harmful protist
LYME DISEASE-ticks carry harmful bacteria

64. PATHOLOGISTS- study the causes & effects of a disease.

65. PATHOLOGISTS- study the causes & effects of a disease.

66. PATHOLOGISTS- study the causes & effects of a disease.

67. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
spread of the disease

68. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
spread of the disease
“Where does it hurt?”

69. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Where does it hurt?”

70. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Where have you been?”

71. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Where have you been?”

72. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“How long have you had the rash?”

73. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“How long have you had the rash?”

74. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“How long have you been travelling?”

75. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“How long have you been travelling?”

76. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“What have you been eating?”

77. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“What have you been eating?”

78. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“WHERE have you been eating?”

79. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Where have you been eating?”

80. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Can you take this blood test?”

81. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Can you take this blood test?”

82. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Can you take this blood test?”

83. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Can you take this blood test?”

84. END…

85. How fast can an infectious disease spread?
We already learned Tuesday…pretty fast.

86. Brainpop on epidemics & pandemics!

87. Have students review “Plagues through history” and decide what makes an outbreak an EPIDEMIC or even WORSE PANDEMIC!

88. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Will you take this vaccine?”

89. Contrast… PATHOLOGISTS worried about DIAGNOSING the symptoms
EPIDEMIOLOGISTS
worried about TRANSMISSION
of the disease
“Will you take this vaccine?”