Microbiologie Test

A 6-year-old boy developed an erythematous rash around his face and arms. Swollen lymph nodes around the infection were reported on the physical examination but no other abnormality. A gram- positive and coagulase positive cocci were identified. What is most likely pathogen for above condition?

The bacteria involved in the production of dental caries is

Which test to be conducted to differentiate between Staph epidermidis and Staph saprophyticus?

During one week, a 7-year boy develops pustules on his face. Then, some of the pustules break,
forming shallow erosions in appearance of a honey-colored crust. Next, new lesions form around the
crust. The boy’s¬ father has similar lesions after one week of the son’s illness. The Gram stain from a
skin pustule showed gram positive in grape-like clusters. The colonies were catalase positive. What
is the most likely microorganism?

A 17-year female was admitted complaining about a fever of 39.3oC and vomiting. She started
her menstrual period 4 days before she became ill. On the next day of admission, she had continued
fever, vomiting and loose stools. She was hypotensive of SBP of 78 & DBP 54 mmHg with a heart
rate of 120 beats per min. Physical exam found most prominent erythematous rash on her trunk.
Cultures were obtained from vaginal specimen show catalase positive, Gram positive cocci of
staphylococcus colonies. Which pathogen is responsible the stated problem?

Which of the following bacteria is also called the gamma or nonhemolytic streptococci?

A 6-year-old boy presents to his pediatrician for sore throat and a headache. His symptoms
began approximately 2 days ago and have not improved. The boy appears uncomfortable and feels
warm. Physical examination is notable for perioral crusted lesions with tonsillar swelling with
exudates. Which of the following is most likely cause the problem?

A 6-year-old boy presents to his pediatrician for sore throat and a headache. His symptoms
began approximately 2 days ago and have not improved. The boy appears uncomfortable and feels
warm. Physical examination is notable for perioral crusted lesions with tonsillar swelling with
exudates. Pharyngeal swap reveals gram positive cocci, with catalase negative and bacitracin
sensitive. What is most likely diagnosis?

A 4-year boy was admitted establish the diagnosis of a generalized skin rash and fever. The
family histories were not known because the boy was in care center from age of 2 months. The boy
experienced frequent upper respiratory infections and tonsillitis. Diffused epidermal exfoliation from
the face, thorax, members, and scalp were observed. Culture of injured skin was positive for
Staphylococcus aureus. What factor is responsible for the problem?

Which of bacteria having property of catalase positive, coagulase negative and Novobiocin sensitive?

A 17-year female was admitted complaining about a fever of 39.3oC and vomiting. She started
her menstrual period 4 days before she became ill. On the next day of admission, she had continued
fever, vomiting and loose stools. She was hypotensive of SBP of 78 & DBP 54 mmHg with a heart
rate of 120 beats per min. Physical exam found most prominent erythematous rash on her trunk.
Cultures were obtained from vaginal specimen show catalase positive, Gram positive cocci of
staphylococcus colonies. Which cytokines are responsible for systemic shock syndrome?

Within hours of food consumption, 45 year old man experienced acute gastroenteritis was admitted to the ICU. The patient progressed on to develop system shock. Culture of stool was positive for Staphylococcus aureus. What factor is responsible for acute gastroenteritis?

A 6-year-old boy presents to his pediatrician for sore throat and a headache. His symptoms
began approximately 2 days ago and have not improved. The boy appears uncomfortable and feels
warm. Physical examination is notable for perioral crusted lesions with tonsillar swelling with
exudates. Pharyngeal swap reveals gram positive cocci, with catalase negative and bacitracin
sensitive. Which group of hemolysis the pathogen belong?

60-man is hospitalized for pneumonia and urine catheter is placed. Patient feels better after 2
days, however he has dysuria and urgency. A urine culture reveals gramm+ in pairs and chain.
Antibiogram is resistant to vancomycin. What is true about the pathogen?

Before dental procedure Ampicillin is given to prevent bacterial sub-acute endocarditis in high-
risk person. What is most likely pathogen for this condition?

A 25-y woman came to ER having 5-hour of fever, rash, and altered mental status. Her BP is low (76/58) and HR is fast. After physical exam, a used tampon is removed from genital tract. Culture of vaginal and nasal specimen reveals Gram positive in cluster. What most likely mechanism is responsible for problem?

Staphylococcus spp. and Streptococcus spp. are

A 17-year female was admitted complaining about a fever of 39.3oC and vomiting. She started
her menstrual period 4 days before she became ill. On the next day of admission, she had continued
fever, vomiting and loose stools. She was hypotensive of SBP of 78 & DBP 54 mmHg with a heart
rate of 120 beats per min. Physical exam found most prominent erythematous rash on her trunk.
Cultures were obtained from vaginal specimen show catalase positive, Gram positive cocci of
staphylococcus colonies. Which action of the factors is explained for systemic shock syndrome?

What is major virulence factor for Streptococcus pneumoniae uses to evade the host’s immune
response?

A 10-year-old male is taken to his physician by his parents due to a sore throat. The bacteria
from throat specimen are gram-positive and bacitracin inhibits their growth. The child is given
treatment of Penicillin G and sent home. Which of the following is most likely cause the problem?

Which of the following bacteria have been found to be most resistant to the drug vancomycin?

A 19-y sexually active woman came to OPD having dysuria and pain when urinating. Urine
culture reveals Gram positive, catalase positive cocci. Which two lab tests would be most helpful to
distinguish the causal organism from other members?

Mycobacterium leprae បង្កជម្ងឺ ៖

Citrobacter freudii បង្កជម្ងឺ ៖

Enterobacter is sensitive to

ការចម្លងរោគដែលបង្កអោយជា Cholerae តាមរយៈ :

Enterobacter បង្កជម្ងឺ​ ៖

Leprosy ជាជម្ងឺ

Incubation period of Cholerae is

ការចម្លងរោគដែលបង្កអោយជា Cholerae តាមរយៈ :

Prevention for leprosy is

Klebsiella is sensitive to

ការធ្វើរោគវិនិច្ឆ័យ Cholerae ទាន់ពេលវេលា ដោយផ្អែកលើ ៖

Citrobacter is sensitive to

Mycobacterium Leprae ជាបាក់តេរី ៖

ការព្យាបាល Cholerae គឺ ៖

Vibrio ជាបាក់តេរី ៖

Symptom of active tuberculosis is

Enterobacter ជាបាក់តេរី ៖