Streptococcus Vs. Staphylococcus 3

Question 1

How do you ID group B streptococcus?

Answer 1

See if it’s positive for hemolysis (Beta)

Resistant to bacitracin

Negative (-) catalase

Question 2

In what organ is group B strep carried?

Answer 2

Found in the colon

But can move into the vaginal canal since it is very close

Question 3

Why is group B strep screened in third trimester pregnancies

Answer 3

Because it is the number one killer of Neonates in North America from infectious diseases

Question 4

Why are pregnant woman put on antibiotics during labor specifically for group B strep

Answer 4

To reduce the chance of the newborn getting group B strep by aspirating it down into the lungs during delivery

Question 5

In newborns, what are the two serious diseases that can be caused by group B strep

Answer 5

1.) Long destructive pneumonia

Which can lead to…

2.) Sepsis & meningitis

Question 6

Streptococcus pyogenes is responsible for what three infections in the US

Answer 6

Strep throat

Impetigo

Scarlet fever

Question 7

What are the two rare diseases but very dangerous that streptococcus pyogens are responsible for

Answer 7

TSS

FLESH EATING DISEASE

Question 8

What is the reservoir for streptococcus pyogenes

Answer 8

Humans

Question 9

What drugs is streptococcus pyogenes susceptible to

Answer 9

Penicillins and cephalosporins

Question 10

What area is streptococcus pyogenes carried in humans

Answer 10

10% in the nasopharynx

Question 11

What is sepsis

Answer 11

Sepsis is an overwhelming immune response to a bacterial infection
chemicals trigger an immune response causing inflammation

• sepsis can lead to septic shock

Question 12

What is septic shock

Answer 12

Septic shock is a full body immune response that can be life-threatening due to dangerously Low blood pressure that was triggered by the immune response to vasodilate

Question 13

Do streptococcus pyogenes cause Rheumatic fever directly?

Answer 13

NO.

Not directly but can proceed to it

Question 14

What is Rheumatic fever

Answer 14

An auto immune disease

Some strains of Streptococcus pyogens cause creation of anti-bodies in some people that after all the streptococcus is gone the anti-bodies go find something else to bind to

Question 15

Where do the leftover anti-bodies bind to in Rheumatic fever?

Answer 15

They bind to the proteins that are expressed on your heart valves

Question 16

What happens when you end up with anti-bodies covering your heart valves?

Answer 16

Your immune system says it’s foreign and destroys it

= AUTOIMMUNE DISEASE

Question 17

What is the infectious disease that leads to the destruction of your heart valves?

Answer 17

Rheumatic fever

Question 18

Rheumatic fever is caused by antibodies that recognize what certain type of protein?

Answer 18

M protein in streptococcus pyogenes

Question 19

What is group B streptococcus?

Answer 19

It’s an infectious disease that is a member of the microflora in 1/4-> 1/3 in women in large intestine and vaginal canal

Question 20

Why don’t we have a streptococcus pyogenes vaccine?

Answer 20

Because the risk of getting Rheumatic fever is too high.

Question 21

What’s the difference between endocarditis and rheumatic fever?

Answer 21

Endocarditis is an actual infection of the heart

Rheumatic fever is an alto immune disease that destroys your heart