Strepto

Question 1

Strep is catalase ____?

Answer 1

NEGATIVE

Question 2

Can Strep survive outside host?

Answer 2

YES, but mostly survives inside

Question 3

What increases the viability of Strep outside a host?

Answer 3

• organic material
• moisture
• low temp

Question 4

What degree do S. suis persist in egg feces/decomposing carcass and how long?

Answer 4

25C for 2 weeks

Question 5

at what temperature can Strep survive for 6 weeks to few months in feces?

Answer 5

4 C

Question 6

Severe lesions of strep mostly involves tissue of (2) ?

Answer 6

brain & heart

Question 7

Is strep host-specific?

Answer 7

NO

Question 8

Strep is categorized based on (2)

Answer 8

1. Hemolytic property
2. Antigenic cell wall polysaccharide (Lancefield)

Question 9

(3) Strep that is BETA hemolytic

[ pae ]

Answer 9

S.
pyogenes
agalactiae
equi

Question 10

Strep that is ALPHA (incomplete) hemolytic?

Answer 10

S. suis

Question 11

Because Strep is an “opportunistic” parasite, these (2) are at risk:

Answer 11

1. immunocompromised
2. in current chemotherapy

Question 12

Strep is a sporadic zoonotic infection, what does this mean?

Answer 12

has no trend (minsan meron, minsan wala)

Question 13

(3) Strep that causes reverse zoonoses?

[ ppa ]

Answer 13

S. pyogenes
S. pneumoniae
S. agalactiae

Question 14

strep that commonly affects CHILDREN

• Strep throat
• Scarlet fever
• Impetigo

Answer 14

S. pyogenes (A)

Question 15

Strep that is transmitted vertically (in newborne & adults)

Answer 15

S. agalactiae (B)

Question 16

Strep that is not common in man?

Answer 16

S. equi subsp. equi (C)

Question 17

(2) Strep that causes toxic shock-like syndrome in man?

[ zs ]

Answer 17

S. equi subsp. zooepidemicus (C)
S. suis (D)

Question 18

An emerging zoonotic disease (Strep spp) in China that is transmitted thru small skin wounds?

Answer 18

S. suis

Question 19

A “child” is in a “low” temperature country.

Clinical signs present:
• whitish coat
• swollen tongue (strawberry-like)
• red rash

Answer 19

Scarlet fever

Question 20

A man has:
• red, itchy sores
• crusty yellow scabs
• 10 days after its contact with a fluid sore on skin

It is said to may also be caused by Staphylococcus aureus.

Answer 20

Impetigo

Question 21

A man has big cut on his hands that a bacteria extended into deeper layers of its skin, changing its color.

• oozing pus
• ulcer
• dizzyness
• fatigue

Answer 21

Necrotizing fascilitis

Question 22

A man has pitter or blisters on legs and feet. He has cuts and has been recently exposed to respiratory droplets.

Answer 22

Cellulitis (St. Anthony’s Fire)

Question 23

A >65 year old woman (OLD) has skin problems in vagina where the pathogen entered & has chronic illness involving pharynx

• hypotension
• tachycardia
• tachypnea
• organ failure

Answer 23

Streptococcal Toxic Shock Syndrome

Question 24

A child has pharyngitis but it was untreated, after 2-3 weeks, it lead to Rheumatoid Heart disease. What does the child have?

A leading cause of streptococcal death in childen (1987) that affected 15M people globally.

Answer 24

Acute Rheumatic Fever

Question 25

possible sequela of Strep Throat?

Answer 25

Scarlet fever

Question 26

Strep that is not zoonotic but causes chronic catarrhal mastitis in dairy cow?

Answer 26

S. agalactiae (B)

Question 27

This one is zoonotic and causes mastitis in dairy cows.

Answer 27

S. pyogenes (A)

Question 28

Most common cause of brain abscess & strangles in horses caused by Strep?

Answer 28

S. equi subsp equi (C)

Question 29

Target is the lymph nodes in thorax & abdomen, has long shedding times. Affects: • Horses - wound infection & 2nd respiratory infection • Cows - mastitis • guinea pigs - cervical lymphadenitis

Answer 29

S. equi subsp zooepidemicus (C)

Question 30

Target is YOUNG pigs • polyarthritis • peracute meningitis • septicemia

Answer 30

S. suis (D)

Question 31

Strangles has ____ morbidty but _____ mortality in horses.

Answer 31

high morbidity low mortality

Question 32

what LN is involved in Strangles?

Answer 32

retropharyngeal LN

Question 33

where abscesses are metastasized (LN — abdomen, thorax)

Answer 33

Metastatic strangles / Bastard strangles

Question 34

Can Strep be transmitted thru fomites?

Answer 34

YES

Question 35

Used as definitive diagnosis for Strep? To determine hemolysis

Answer 35

bacterial culture

Question 36

Strep that has VERY fast progression

Answer 36

S. pyogenes

Question 37

In a conventional multiplex PCR, many lines indicate ____?

Answer 37

contamination

Question 38

(3) Antibiotics against strep?

Answer 38

1. Beta-lactams • cephalosporins • penicillin 2. Macrolides 3. Quinolones

Question 39

Wearing PPE is important for strep because it is transmitted ___ & ___

Answer 39

airborne direct contact

Question 40

How to kill strep in a meat? Cook for more than ________

Answer 40

Cook for more than 70C for 10 mins

Question 41

There is a vaccine for horses with strangles. It does not decrease rate of transmission but causes milder lesions only. Give the name & route

Answer 41

PINNACLE, intra-nasally

Question 42

How long should you quarantine a horse that recently travelled? How many negative swab? (interval of 4-7 days)

Answer 42

1 month ; 3 negative swab

Question 43

also called “flesh-eating disease”

Answer 43

Necrotizing fascilitis