Zoonosis 2

Question 1

different ways of disease transmission in viral, parasitic and bacterial vector borne zoonoses

Answer 1

n

Question 2

understand the various methods of disease control and prevention and how they are influenced by transmission

Answer 2

n

Question 3

Tenia Solium

Answer 3

Ternia Solium= parasite transmitted by pigs

Pigs get it from eating human feces (eggs). Humans get it through a few different routes

• porcine cysticercosis
  
  • pigs eat egs (feces)
  • get cycts in muscle
• human taeniasis- eat undercooked meat
  
  • human eats cysts in pork
  • get worms in gut
• human cysticercosis- self infection (feces)
  
  • humans eat eggs
  • cysts in brain

Question 4

Giardiasis

Answer 4

Giardiasis= protozoal parasite transmitted through water

• many animals transmit the disease
• meat can also transmit it
• prevent it by filtering water

Question 5

Rabies

Answer 5

Rabies= viral zoonotic disease

• acute, progressive encephyalomyelitis
• resevoire is most mammals
• bite infects human and virus replicates and travels to CNS where it causes encephalitis
• VACCINATION is our major line of defense

Question 6

Hantavirus

Answer 6

Hantavirus= virus transmitted by rodents

• rodents are asymptomatic and transmit virus through saliva, urine and feces (airborne/inhalation) or bite
• pulmonary syndrome: fever and chills (new world strain)
• hemorrhagic fever with renal syndrome: (old world strain)
• reduce rodent contact ro reduce exposure!

Question 7

Anthrax

Answer 7

Anthrax= bacterial zoonotic disease

• resevoir is soil. affects most mamalian species
• transmission to humans through air, meat, contact, even insect bites
• cattle symptoms
  
  • bleeding everywhere
  • swelling
  • sudden death

Question 8

Brucellosis

Answer 8

Brucellosis= bacterial zoonitic disease

• brucella melitensis: most pathogenic for people
  
  • mostly in mediteranean
• brucella abortus
  
  • everywhere
• transmitted by lots of animals! (major route is drinking unpasteurized milk!)
• causes fever and lots of other stuff

Question 9

Borreliosis

Answer 9

Borreliosis= lime disease

• transmitted by ticks. spirochetes
• two types: hard ticks transmitte lyme. soft ticks transmit relapsing fever.
• bulls eye rash is key diagnostic feature

Question 10

West Nile

Answer 10

West Nile= not a virus!

• transmitted by mosquito bird mosquito life cycle
• bite humans. often doesnt develope into symptomatic infection