Anthropod Borne diseases

Question 1

What are vectors?

Answer 1

Living organisms that transmit disease

Question 2

What are the 4 main mosquito transmitted diseases?

Answer 2

1. Dengue virus
2. West Nile Virus
3. Zika virus
4. Malaria

Question 3

Dengue Virus

Where is it found?

Infects?

Symptoms?

Answer 3

• Sub-tropical areas
• Infects immune cells
• Viremia (Viral blood infection)
• Hemorrhagic fever (fever and bleeding from nose)

Question 4

West Nile Virus

• Where is it found?
• Transmission?

Answer 4

• South and midwest US
• Mosquito feeds on infected bird; transfers to human

Question 5

West Nile Virus

What are the symptoms?

What does the virus target?

Answer 5

• Can cause meningitis
• Targets neurons in brain (neurotropic)

Question 6

Zika virus

• Where can it be found?
• How is it transmitted?

Answer 6

• Florida (south US)
• Virus injected into epithelial cells

Or

• STD

Question 7

Zika virus

• What are the symptoms in adults?
• What are the symtpoms in fetus?

Answer 7

• adult= Can cause Guillain-barre syndrom (autoimmune syndrome)
• fetus= microcephaly

Question 8

What two diseases do fleas cause?

Answer 8

1. Plague
2. Endemic typhus

Question 9

Plague

How is it transmitted?

Answer 9

Bubonic and septicemic= Flea bites human; infects phagocytes

Pneumonic= Infected droplets inhaled

Question 10

Plague

What are the symptoms of:

1. Bubonic plague
2. Septicemic plague
3. pneumonic plague

Answer 10

1. Bubonic= Necrotic lymph nodes
2. Septicemic= Necrotic skin lesions
3. Pneumonic= Vomiting blood

Question 11

Endemic typhus

What region can it be found?

What type of microbe is it?

How is it transmitted?

Answer 11

• Southern US
• Bacteria
• Flea bites infected rodent (opposum)

Question 12

What are the symptoms of Endemic typhus?

Answer 12

• Fever for 5 days
• After 12 days, rash appears

Question 13

What are the Lice transmitted diseases?

Answer 13

1. Epidemic typhus
2. Trench fever

Question 14

Epidemic typhus

• What microbe causes it?
• How is it transmitted?

Answer 14

• Bacteria
• Flying squirrel serves as reservoir; lice bites animal then human

Question 15

What are the symptoms of Epidemic typhus?

Answer 15

• Pointed rash at bite site
• Low blood pressure
• photophobia

Question 16

Trench fever

• What microbe causes it?
• Who does it commonly infect?
• What does it infect?

Answer 16

• Bacteria
• Common among homeless population
• Infects endothelial cells

Question 17

What are the symptoms of trench fever?

Answer 17

• Relapsing fever
• Ocular pain
• Severe skin pain