Myiasis

Question 1

What are the organisms that cause cutaneous myiasis in the Americas?

Answer 1

Dermatobia hominis - human botfly

Question 2

What are the features of myiasis caused by the botfly?

Answer 2

Single lesion on exposed skin

Question 3

How do you prevent and treat myiasis caused by dermatobia hominis?

Answer 3

Prevent bites
Control flies

Petroleum jelly then incise and remove

Question 4

What organism causes cutaneous myiasis in Africa?

Answer 4

Cordylobia anthropophagia -Mango/tumbu fly

Question 5

What are the features of cutaneous myiasis caused by the mango fly?

Answer 5

Multiple itchy boils on covered areas
May have fever
Severe pain

Question 6

How do you prevent myiasis caused by mango fly?

Answer 6

Iron clothes
Wear shoes (sandy soil)
Don't leave clothes to dry for longer than needed

Question 7

What are the risk factors for wound myiasis?

Answer 7

Socioeconomic background
Wound
Lack of hygiene 
Poor medical care
Dermatological condition

Question 8

What organisms cause wound myiasis and where?

Answer 8

Screwworms
Cochliomyia hominivovax -new world
Chrysomya bezziana- old world

Question 9

How do you prevent wound myiasis?

Answer 9

Good wound care- clean and change dressings regularly

Question 10

How do you treat wound myiasis?

Answer 10

Petroleum jelly, remove all larvae and debride necrotic tissue
Fix fistulae