Zoonotic Diseases

Question 1

zoonosis v reverse zoonosis

Answer 1

animals -> ppl = zoonosis

ppl -> animals =reverse

Question 2

about __/10 infectious diseases is zoonotic

Answer 2

6/10

Question 3

Ringworm is known as

Answer 3

Dermatophytosis

Question 4

what causes ringworm

Answer 4

fungal organisms; dermatophytes
2 most common=
Trichophyton (usu. livestock)
Microsporum (usu. d/c)

Question 5

different kinds of Trichophyton dermatophytes and what animals they infect

Answer 5

T. verrucosum: cattle
T. metagrophytes: pigs/ horses
T. equinum: horses

Question 6

different kinds of Microsporum dermatophytes and what animals they infect

Answer 6

M. Canis: d/c

Question 7

how dermatophytes are spread

Answer 7

fomites, direct contact, spores remain in soil (grow aerobically)

Question 8

signs of ringworm

Answer 8

alopecia, circular lesions, crusts on skin w scale and flakes, may or may not have pruritis (itch)

Question 9

incubation time of dermatophytes and length of dematophytosis (RW)

Answer 9

incubation= 1-6 wks

length 1-4 months

Question 10

once dermatophyte fungus invades the skin, it grows and appears like a ring. which portion is the most active?

Answer 10

the periphery.

Question 11

ringworm lesions are often discolored in this animal

Answer 11

pigs

Question 12

how to treat ringworm

Answer 12

antifungals (ointments, systemics like Griseofuluin)

Question 13

how to diagnose ringworm

Answer 13

signs, fungal culture (taken from periphery)

use Sarbouad’s medium; inhibits growth, encourages fungal growth, turns pink if +

Question 14

Salmonellosis is the ____

salmonella is the ____

Answer 14

genus

species

Question 15

salmonella in humans used to be called

Answer 15

Typhoid fever

Question 16

how salmonella is spread

Answer 16

found in GI tract of infected, shed thro feces, feces/oral contamination

Question 17

signs of salmonellosis

Answer 17

diarrhea, w/ or w/o fever, may have septicemia

often fatal

Question 18

who may shed salmonella bacteria

clinically infected or asymptomatic carriers?

Answer 18

both, stress increases amount shed

Question 19

what foods should humans be cautious consuming bc of salmonella

Answer 19

meat (may be contaminated after slaughter; GI tract opens), raw milk (possible contamination); cook to kill
raw eggs may have bacteria harbored in ovaries or contaminated shells

Question 20

about 95% of these animals harbor salmonella in their GI track normally. found in feces and on skin

Answer 20

reptiles

Question 21

signs of Samonellosis

Answer 21

cattle= higher incidence in young, speticemia, adults may show signs after stress, diarrhea, fever, pain, may abort
pigs= diarrheal septicemia

Question 22

diagnosing salmonellosis

Answer 22

signs, Ab titers, fecal culture

Question 23

treatment of salmonellosis

Answer 23

drug resistance, nursing care/ rehydration

reduce rodents and birds that may carry feces