Physical factors - Malaria

Question 1

Physical - Temp

Answer 1

> Must be between 15-40oC TMT the Anopheles mosquito
survives in these areas.

> eg) they are found in 100 different tropical regions of
the world - large areas of Africa, Asia, Central + South
America, Hati + The Dominican Republic.

Question 2

Physical - Vector

Answer 2

> The presence of the female Anopheles mosquito. TMT it
can act as a vector for the malarial parasite.

> eg) In sub-Saharan Africa + many other malaria endemic
countries there has been a decline from a mortality of 2
million to 436,000 per year in 2018.

Question 3

Physical - Humidity

Answer 3

> Humidity of 60%+ TMT water will not evaporate, allowing

pools of stagnant water to build up.

Question 4

Physical - Shade

Answer 4

> Mosquitos need shade TMT they can digest the blood

meal under vegetation.

Question 5

Physical - Stagnant Water

Answer 5

> Like paddy fields are needed to lay larvae. TMT
breeding grounds are provided for the mosquito to
breed.

> eg) In Kiagware - Kenya, when the rains arrived in July, it
would create pools of stagnant water, mosquitos would
breed + kill an average of 150 people in July per annum -
known as malaria month.

Question 6

Physical - Altitude

Answer 6

> Mosquitoes are usually found in areas with an altitude of

up to 3000m. TIB it requires these conditions to live in.

Question 7

Physical - Cattle/Humans

Answer 7

> Presence of blood through cattle/humans TMT the blood
provides protein for the female mosquitoes eggs,
allowing them to breed.