Question

QUESTION 4

On September 6, a six-year-old boy experienced fever, chills and vomiting. On September 7, he was hospitalized with diarrhea and swollen lymph notes under both arms. On September 3, the boy had been scratched and bitten by a cat. Chloramphenicol (a synthetic, lipid-based antibiotic that interferes with protein synthesis) was administered to the boy from September 7 when Yersinia pestis was isolated from the boy. On September 17, the boy’s temperature returned to normal and on September 22, he was released from the hospital.

What was the mode of transmission in this instance?

1. fecal-oral

2. fomites

3parenteral

4endogenous

QUESTION 5

On September 6, a six-year-old boy experienced fever, chills and vomiting. On September 7, he was hospitalized with diarrhea and swollen lymph notes under both arms. On September 3, the boy had been scratched and bitten by a cat. Chloramphenicol (a synthetic, lipid-based antibiotic that interferes with protein synthesis) was administered to the boy from September 7 when Yersinia pestis was isolated from the boy. On September 17, the boy’s temperature returned to normal and on September 22, he was released from the hospital.

Which type of cell would most likely be first on the scene in terms of response to this pathogen?

1Cytotoxic T Cell

2Neutrophil

3Monocyte

4Plasma Cell

QUESTION 6

On September 6, a six-year-old boy experienced fever, chills and vomiting. On September 7, he was hospitalized with diarrhea and swollen lymph notes under both arms. On September 3, the boy had been scratched and bitten by a cat. Chloramphenicol (a synthetic, lipid-based antibiotic that interferes with protein synthesis) was administered to the boy from September 7 when Yersinia pestis was isolated from the boy. On September 17, the boy’s temperature returned to normal and on September 22, he was released from the hospital.

When the boy left the hospital, he would have been in possession of some new antibodies to Yersinia pestis. Those antibodies would most likely be____________.

1IgM

2IgA

3IgD

4IgE

5IgG

Answer 1

Ans 4:- 3. parenteral

explanation:- as boy was bitten by cat, bacteria would have enter into body through blood vessels and muscles hence mode of transmission is parenteral route. fecal-oral is when bacteria transmit through oral or anal route. endogenous transmission is when bacteria would develop inside body and infect host. Fomites is when object cause infection.

Ans 5:- Neutrophil

explanation;- once pathogen enter into human body neutrophile comes first at site of infection as they are first line of body's defence system. and available in abundant in body. cytotoxic T cell mainly active against cancer cell and involved in apoptosis which is programmed cell death. monocytes involved in adaptive immunity. plasma cell mainly involve in auto immune disease.

Ans 6:- IgM

explanation:- IgM is first antibody that produced by plasma B cell in response to pathogen hence boy would have IgM in his body when he left the hospital. IgG comprise 75% of antibody but at initial stage it does not develop. IgA,IgD, IgE, develops at later stage of infection.