Mosquito-Borne Diseases: Malaria Part 1

Question 1

Where does Malaria generally occur?

Answer 1

Areas of the world between 45 degrees N and 40 degrees S (latitude)

Question 2

About ___% of the world’s population lives in malarious areas

Answer 2

40%

Question 3

Indigenous malaria disappeared from the US in the ____s

Answer 3

1950s

Question 4

When does introduced Malaria occur?

Answer 4

Local people are infected by imported cases/relapses from former cases

Question 5

5 Malaria-Causing Protozoan Parasites

Answer 5

Plasmodium vivax
Plasmodium falciparum
Plasmodium malaria
Plasmodium ovale
Plasmodium knowlesi

Question 6

What mosquito genus can transmit the infective sporozoite life stage to humans?

Answer 6

Anopheles

Question 7

True or false: EVERY Anopheles species is a vector to the malaria-causing protozoan

Answer 7

False

Question 8

Of the 400 known Anopheles species, how many are vectors?

Answer 8

Less than half (only 45-50 species)

Question 9

Where is P. vivax found?

Answer 9

All malarious areas but NOT sub-Saharan Africa

Question 10

Where is P. ovale found?

Answer 10

Tropical areas of W. Africa, sometimes W. Pacific & SE Asia

Question 11

Where is P. malariae found?

Answer 11

Patchy but worldwide distribution

Question 12

Where is P. falciparum found?

Answer 12

Sub-Saharan Africa, common in SE Asia & S. America

Question 13

Where is P. knowlesi found?

Answer 13

SE Asia

Question 14

What is the predominant Plasmodium species?

Answer 14

P. falciparum

Question 15

What type of reproduction occurs within mosquitoes?

Answer 15

Asexual & sexual

Question 16

Asexual Reproduction in Mosquitoes

Answer 16

Only occurs in human host

Question 17

Mosquitoes are the _ host

Answer 17

Definitive host

Question 18

Humans are the _ host

Answer 18

Intermediate host