Question

Texts: MICROBIOLOGY: Few Haemophilus influenzae and moderate Strep Pneumoniae were recovered from the sputum culture. How should the lab microbiologist report this? Are these pathogens or normal flora present? What is the follow-up test for a gram stain observed as gram-negative coccobacilli? Moderate Micrococcus and a few Staph Saprophyticus were recovered from a urine culture. The technologist wants to know how to report this and which organism needs further work-up. What follow-up test is required? True or False: (If false, give the true statement) Haemophilus paraphrophilus requires x-factor and causes endocarditis.

          Texts: MICROBIOLOGY: Few Haemophilus influenzae and moderate Strep Pneumoniae were recovered from the sputum culture. How should the lab microbiologist report this? Are these pathogens or normal flora present?

What is the follow-up test for a gram stain observed as gram-negative coccobacilli? 

Moderate Micrococcus and a few Staph Saprophyticus were recovered from a urine culture. The technologist wants to know how to report this and which organism needs further work-up. What follow-up test is required?

True or False: (If false, give the true statement) Haemophilus paraphrophilus requires x-factor and causes endocarditis.

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Added by Christopher H.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Shaiju T

03/28/2022

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Step 1: The lab microbiologist should report the presence of Haemophilus influenzae and Strep Pneumoniae in the sputum culture. Show more…

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Texts: MICROBIOLOGY: Few Haemophilus influenzae and moderate Strep Pneumoniae were recovered from the sputum culture. How should the lab microbiologist report this? Are these pathogens or normal flora present? What is the follow-up test for a gram stain observed as gram-negative coccobacilli? Moderate Micrococcus and a few Staph Saprophyticus were recovered from a urine culture. The technologist wants to know how to report this and which organism needs further work-up. What follow-up test is required? True or False: (If false, give the true statement) Haemophilus paraphrophilus requires x-factor and causes endocarditis.

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00:01 Hello everyone, so the given question asks, we are the following results of the inoculation on a blood agar plates, record our observation in the table below.

00:09 So we have six different bacteria as listed here in the source and we have to write the result and the interpretation according to the figure given in the question.

00:20 So the first one is streptococcus pneumonia.

00:23 The result from the figure is alpha haemolysis.

00:31 And interpretation are colony shows green colored zone and organism partially hemolyzed rbc.

00:47 Partially hemolize rbc.

00:49 The next one reads streptococcus pyogen's.

00:53 Streptoccus pyogyns shows beta hemolysis, beta hemolysis.

01:03 Interpretation is clear zone around the colonies so the zone around the colonies is clear and complete hemolysis we can see that is from the figure or infer that from the figure and so so since there is complete hemolysis the rbc is will actually rbcs are destroyed and hemoglobin's release rbc is destroyed.

01:34 The next one reads, streptococcus saliva various.

01:38 Now this also shows alpha haemolysis.

01:42 So this is alpha hemolysis.

01:48 Now the interpretation in this case is partial hemolysis of rbcs.

01:53 We can see that from the finger.

01:55 So it is partial hemolysis of rbc obviously...

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