Lecture 17 a

Question 1

culicinae are vectors for which arboviruses

Answer 1

• zika
• dengue
• WNF

Question 2

Culicinae Life Cycle

Answer 2

1. virus enters body cavity
2. virus enters salivary gland
3. Virus enters human body and blood
4. virus in human blood enters mosquito
5. virus replicates in midgut

Question 3

what is horizontal transmission?

Answer 3

passage between vector and host

Question 4

what is vertical transmission?

Answer 4

passage to other members, life stages and generations within vector population

Question 5

types of vertical transmission

Answer 5

• transtadial
• generational
• veneral

Question 6

what is a dead end host?

Answer 6

may develop symptoms but will not amplify pathogen where it can be transmitted back to host