Lecture 7 - Lyme Disease

Question 1

Most common vector borne disease

Answer 1

Lyme disease

Question 2

Most common symptom of Lyme disease?

Answer 2

Bulls eye rash associated with a tick bite

Question 3

Borrelia burgdorferi

Answer 3

G- spirochete

Question 4

How is Borrelia burgdorferi transmitted between hosts?

Answer 4

Ticks

Question 5

What type of animals do ticks infect?

Answer 5

Vertebrates and arthropods

Question 6

Features of Ixodes Tick

Answer 6

hard bodies that are very small but still visible to the naked eye

Question 7

3 stages of the tick lymph cycle

Answer 7

Larva, nymph, adult *require blood meals between each stage

Question 8

In what life cycle step does ticks most commonly infect humans?

Answer 8

Nymph

Question 9

What time of year do most tick infections occur?

Answer 9

Spring/Summer

Question 10

How does transmission occur?

Answer 10

Ticks latch onto human and move to hard to reach spots. Injects anesthetic and becomes engorged.

Question 11

How long does it take for the tick to begin transmission

Answer 11

24h

Question 12

What happens in the early localized stage

Answer 12

Bulls eye rash occurs 1-2 weeks after bite and expands if untreated

Question 13

Early disseminated stage is indicated by

Answer 13

Major rashes, pain and swelling the joints, heart palpitations, meningitis, and facial palsy

Question 14

What happens in th elate disseminated stage?

Answer 14

Little response to antibiotics and neurological problems are likely

Question 15

How is Lyme disease diagnosed?

Answer 15

Visible tick bite, antibody tests, and sending the tick to a lab

Question 16

Treatment of Lyme disease

Answer 16

2-4 weeks of antibiotics