Q: urine culture has mixed growth of 4 bacteria species isolated. viable count: <10 (small letter 4) /ml probably contaminants.what does this mean to me?

Meaningless: Almost certainly this means 1) you don't have a urinary tract infection and 2) the urine specimen was not a good "clean catch"; all those bacteria almost certainly come from your vaginal opening, labia, etc. (That's why the lab called them "probably contaminants".)

Q: can you tell me the genus and species of two gram positive pathogenic bacteria that are hemolytic and give the diseases t?

Gram + cocci: 1. Streptococcus pneumonia is a cause of community acquired pneumonia. 2. Streptococcus agalactiae (group B strep) can cause neonatal infections and chorioamnionitis.

Q: aerobic semen culture showed enterococcus. anaerobic culture was clear of bacteria. does it mean an enterococcus species easier to be treated?

No: Aerobic means it grows in oxygen. Anaerobic means the bacteria grow in the absence of oxygen. Whether bacteria are aerobic or anaerobic does not determine how hard those bacteria are to treat. That is determined by whether we have readily available antibiotics capable of killing them.

Q: urine culture came back: 50, 000-100, 000 cfu/ml of enterococcus species can someone explain exactly what this means and what sort of bacteria this is?

See answer: A urine culture/sensitivity (c/s) is used to identify the specific bacteria causing a UTI and the antibiotics the bacteria is sensitive/resistant to. Urine c/s is deemed positive if shows bacterial count of &gt;1, 000 colonies/ml of a typical urinary tract organism. The large intestine and the perineal area serve as reservoir for pathogenic bacteria. E.Coli accounts for &gt;70% of uti; enterococcus 5-10%.

Q: what are some common genera of pathogenic bacteria that have no species found in the human body naturally? borrelia? brucella? yersinia? mycoplasma?

The Microbiome... : Great thought question. However, you are assuming we know all the community of species of bacteria in the body (aka. The microbiome). Recently, we have discovered thousands of genera in our body through molecular techniques (most don't even have a name yet). Though it's tempting to generalize, the question you pose can't be answered with any reliability with what we know today.

Q: 28 weeks pregnant, diagnosed with enterococcus species of bacteria at 10, 000 colonies/ml, have slight lower back pain. do i need to be treated for uti?

Possible UTI: I think it would be best for you to be treated. Yes, the colony count of 10, 000 is low, you do not report symptoms, and it could all just be contamination or colonisation...However...A UTI can cause premature labour, so there is a much lower threshold for treating possible uti's during pregnancy.

Question 1

how do biochemical tests help identify an unknown bacterial species?

Accepted Answer

Bacteria: Different bacteria metabolize in different ways than others, and these differences and the enzymes used can be assayed by these biological tests and are used to differentiate one bacterial species from another.

Question 2

wound culture: few staphylococcus species, bacterial morphotypes, few diphtheroids. what is it mean ?

Accepted Answer

Only the organisms: which grew in the culture media over the next few days. Does this mean these organisms were dominant within the wound? No. Just ones which grew in culture &amp; MIGHT be playing a roll in slowing healing/increasing the wound vs. just present. Wound cultures are rarely not + for bacteria, yet rarely definitive; just offer some clues to possibly improve educated guesses as to best treatment options.

Question 3

urinalysis report showed enterococcus species bacteria susceptible to "tetracycline". so would doxycyline work (since it is a tetracycline)? or not?

Accepted Answer

Yes: Yes on your culture and sensitivities it should say isolates susceptible to tetracycline are sensitive to doxycycline as well. Symptoms matter most if no improvement in a few days return to clinic or call md. Do not take phenazopyridine for more than 2 days.

Question 4

urine culture has mixed growth of 4 bacteria species isolated. viable count: <10 (small letter 4) /ml probably contaminants.what does this mean to me?

Accepted Answer

Meaningless: Almost certainly this means 1) you don't have a urinary tract infection and 2) the urine specimen was not a good "clean catch"; all those bacteria almost certainly come from your vaginal opening, labia, etc. (That's why the lab called them "probably contaminants".)

Question 5

can you tell me the genus and species of two gram positive pathogenic bacteria that are hemolytic and give the diseases t?

Accepted Answer

Gram + cocci: 1. Streptococcus pneumonia is a cause of community acquired pneumonia.
2.  Streptococcus agalactiae (group B strep)  can cause neonatal infections and chorioamnionitis.

Question 6

aerobic semen culture showed enterococcus. anaerobic culture was clear of bacteria. does it mean an enterococcus species easier to be treated?

Accepted Answer

No: Aerobic means it grows in oxygen.  Anaerobic means the bacteria grow in the absence of oxygen.  Whether bacteria are aerobic or anaerobic does not determine how hard those bacteria are to treat.  That is determined by whether we have readily available antibiotics capable of killing them.

Question 7

urine culture came back: 50, 000-100, 000 cfu/ml of enterococcus species can someone explain exactly what this means and what sort of bacteria this is?

Accepted Answer

See answer: A urine culture/sensitivity (c/s) is used to identify the specific bacteria causing a UTI and the antibiotics the bacteria is sensitive/resistant to. Urine c/s is deemed positive if shows bacterial count of &gt;1, 000 colonies/ml of a typical urinary tract organism. The large intestine and the perineal area serve as reservoir for pathogenic bacteria. E.Coli accounts for &gt;70% of uti; enterococcus 5-10%.

Question 8

what are some common genera of pathogenic bacteria that have no species found in the human body naturally?  borrelia? brucella? yersinia? mycoplasma?

Accepted Answer

The Microbiome... : Great thought question. However, you are assuming we know all the community of species of bacteria in the body (aka. The microbiome). 

Recently, we have discovered thousands of genera in our body through molecular techniques (most don't  even have a name yet). Though it's tempting to generalize, the question you pose can't be answered with any reliability with what we know today.

Question 9

28 weeks pregnant, diagnosed with enterococcus species of bacteria at 10, 000 colonies/ml, have slight lower back pain. do i need to be treated for uti?

Accepted Answer

Possible UTI: I think it would be best for you to be treated.  Yes, the colony count of 10, 000 is low, you do not report symptoms, and it could all just be contamination or colonisation...However...A UTI can cause premature labour, so there is a much lower threshold for treating possible uti's during pregnancy.

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Doctor answers about:

How do biochemical tests help identify an unknown bacterial species

A member asked:

How do biochemical tests help identify an unknown bacterial species?

A member asked:

Wound culture: few staphylococcus species, bacterial morphotypes, few diphtheroids. what is it mean ?

A member asked:

Urinalysis report showed enterococcus species bacteria susceptible to "tetracycline". so would doxycyline work (since it is a tetracycline)? or not?

A member asked:

Urine culture has mixed growth of 4 bacteria species isolated. viable count: <10 (small letter 4) /ml probably contaminants.what does this mean to me?

A member asked:

Can you tell me the genus and species of two gram positive pathogenic bacteria that are hemolytic and give the diseases t?

A member asked:

Aerobic semen culture showed enterococcus. anaerobic culture was clear of bacteria. does it mean an enterococcus species easier to be treated?

A member asked:

Urine culture came back: 50, 000-100, 000 cfu/ml of enterococcus species can someone explain exactly what this means and what sort of bacteria this is?

A member asked:

What are some common genera of pathogenic bacteria that have no species found in the human body naturally? borrelia? brucella? yersinia? mycoplasma?

A member asked:

28 weeks pregnant, diagnosed with enterococcus species of bacteria at 10, 000 colonies/ml, have slight lower back pain. do i need to be treated for uti?

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