Tick Borne Diseases Flashcards

1
Q

Ticks

A

Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Ixodida

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2
Q

Tick Families- Ixodidae

A

Hard ticks
700 species
Feeds for days to weeks

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3
Q

Tick Families-Argasidae

A

Soft ticks
200 species
Feeds minutes to hours

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4
Q

The LIfe cycle of ticks

A

Egg
Larva
Nymph
Adult

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5
Q

Characteristics

A
  • Do not tolerate sunlight, dryness, or excessive rainfall
  • Can survive as long as 2-3 years without a blood meal
  • Females must take a blood meal before fertilization
  • Restricted activity during cold months
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6
Q

Questing

A

Ticks climb grass and attempt to attach to the host

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7
Q

Ticks in Hawaii

A

Spinose Ear tick (Otobius megnini)

Brown dog tick ( Rhipicephalus sanguineus)

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8
Q

Spinose Ear Tick

A

Otobius megnini

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9
Q

What does the Spinous ear tick (Obtobius megnini) cause?

A

Inflammation and ruptured tympanic membrane

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10
Q

Brown Dog Tick

A

Rhipicephalus sanguineus

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11
Q

Brown Dog Tick Host and location on hosts

A

Livestock and dogs

all over but usually ear canal and between toes

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12
Q

Brown Dog Tick Clinical importance

A

anemia

The intermediate host for Babesia canis (RMSF)

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13
Q

American Dog Tick or Wood Tick

A

Dermacentor variabilis

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14
Q

American Dog Tick or Wood Tick

Clinical importance

A

Vector of RMSF, tularemia and other microbes

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15
Q

Lone Star Tick

A

Amblyomma americanum

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16
Q

Lone Star Tick

Clinical Importance

A

Vector for Ehrlichiosis and tularemia

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17
Q

Deer Tick/ Black-legged Tick

A

Ixodes scapularis

18
Q

Deer Tick/Black-legged Tick

Hosts and Distribution

A

Host: Larval/nymph–>mice and voles
Adults—>horses, dogs, deer, humans
Distribution: U.S east of Ohio River Valley

19
Q

Deer Tick/Black-legged Tick

Clinical Importance

A

Anaplasmosis
Babesia
Borrelia burgdorferi
Transmits Lyme disease

20
Q

Rickettsiosis

A

Gram-negative bacteria cocci, rod, thread-like

Obligate intracellular parasite

21
Q

What bacteria causes Anaplasmosis

A

Anaplasma phagocytophilum
Rickettsia
Obligate intracellular organism

22
Q

What transmits Anaplasmosis?

A

Tick bites
Ixodes scapularis (deer tick)
Ixodes pacificus (Western black-legged tick)
Blood transfusion

23
Q

What bacteria causes Ehrlichiosis?

A

Ehrlichia ewingii
Ehrlichia chaffeensis
E. Canis
Rickettsia

24
Q

What causes the transmission of Ehrlichiosis?

A

Tick bites from Amblyomma americanum (Lone star tick)

25
Q

What bacteria causes Rocky Mountain spotted fever?

A

Rickettsia rickettsii

causes vasculitis

26
Q

What transmits Rocky Mountain Spotted fever?

A

brown Dog tick/wood tick bite

27
Q

What is the bacteria responsible for tularemia

A

Francisella tularensis

28
Q

Name the different forms of Tularemia

A
Ulceroglandular
glandular
oropharyngeal 
oculoglandular
pneumonic
29
Q

Tularemia transmission

A

Dermacentor variabilis-American dog tick or wood tick
Dermacentor andersoni-Rocky Mountain wood tick
Amblyomma americanum-Lone star tick
Deer fly

30
Q

What spirochete bacteria is responsible for Lyme disease?

A

Borrelia burgdorferi

31
Q

What is the most common vector borne disease in the US?

A

Lyme Disease

32
Q

What ticks are not known to transmit Lyme(Safe ticks?)

A

Lone star ticks, American Dog tick, rocky mountain wood tick, brown dog tick

33
Q

Lyme disease stage one

A

Early localized Lyme disease

34
Q

Lyme disease stage two

A

Early disseminated Lyme disease

35
Q

Lyme disease stage three

A

Late disseminated Lyme disease

36
Q

Ixodes spp is the common vector for…

A

Lyme disease

37
Q

Ixodes scapularis is ______ and causes _____

A

Deer tick

Lyme disease/Borrelia burgdorferi

38
Q

What causes Lyme disease?

A

A bacterium transmitted by the bite of a black-legged tick

39
Q

which protozoan infects and destroys red blood cells?

A

Babesia spp

40
Q

What causes the transmission of babesiosis

A

Ixodes spp