NEET PG / USMLE – MCQ 5

A 1-day-old newborn is evaluated for possible sepsis. Blood cultures grow gram-positive cocci in pairs and chains that agglutinate with group B antiserum. The most likely epidemiologic risk factor for this infection involves bacterial colonization of which of the following?
(A) Mother’s vagina
(B) Newborn’s gastrointestinal tract
(C) Newborn’s nasopharynx
(D) Placenta
(E) Umbilical cord remnant

Correct answer : (A) Mother’s vagina

Explanation: This is a case of early onset sepsis in a newborn. The organism involved is Group B streptococci (gram-positive cocci in pairs and chains that agglutinate with group B antiserum). The source of infection is probably the mother’s vagina.

4 Comments

Add a Comment

Your email address will not be published. Comments will be displayed only after moderation.

Read previous post:
NEET PG / USMLE – MCQ 4

A 72-year-old man who is a retired construction worker comes to the physician because he has had a lesion on...

Close