What are parvobacteria?

The parvobacteria are short Gram-negative bacilli (coccobacilli). Many such as Haemophilus species are pleomorphic. Some bacilli, such as Pasteurella multocida may show bipolar staining.

Which of the following is a characteristic of Francisella tularensis?

Tiny, pin-point, translucent colonies after 18-24 hours. Difficult to see individual colonies in growth that is less than 24 hours. Gray-white, opaque colonies less than 1 mm after 48 hours. No hemolysis.

Which of the following instruments is used for continuous monitoring of mycobacterial growth?

The BACTEC MGIT 960 instrument is a fully automated system that exploits the fluorescence of an oxygen sensor to detect growth of mycobacteria in culture. Its performance was compared to those of the radiometric BACTEC 460 instrument and egg-based Lowenstein-Jensen medium.

What is Gram stain of Bordetella?

Bordetella pertussis is a small (approximately 0.8 μm by 0.4 μm), rod-shaped, coccoid, or ovoid Gram-negative bacterium that is encapsulated and does not produce spores. It is a strict aerobe. It is arranged singly or in small groups and is not easily distinguished from Haemophilus species.

Why is chocolate agar used in throat culture?

Chocolate agar is used for growing fastidious respiratory bacteria, such as Haemophilus influenzae and Neisseria meningitidis. In addition, some of these bacteria, most notably H.

Which bacteria are most common?

The following is a comprehensive list of 25 of the most common bacteria and viruses causing HAIs:

• Escherichia coli.
• Klebsiella pneumoniae.
• Morganella morganii.
• Mycobacterium abscessus.
• Psuedomonas aeruginosa.
• Staphylococcus aureus.
• Stenotrophomonas maltophilia.
• Mycobacterium tuberculosis.

Does Francisella tularensis grow on MacConkey Agar?

MacConkey agar – no growth.

Who does Francisella tularensis target?

tularensis is the target of IFN-γ, as this cytokine does not affect phagosomal escape of either LVS or SchuS4 in either J774A. 1 cells and human or murine primary macrophages (Bonquist et al.

Which culture media is used for Mycobacterium?

Löwenstein–Jensen medium, more commonly known as LJ medium, is a growth medium specially used for culture of Mycobacterium species, notably Mycobacterium tuberculosis.

What is a mycobacterial culture?

Mycobacterial culture is a test to look for the bacteria that cause tuberculosis and other infections caused by similar bacteria.

Where is Bordetella found?

It is a highly infectious bacterial disease involving the respiratory tract. It is caused by a bacterium (Bordetella pertussis or Bordetella parapertussis ) that is found in the mouth, nose and throat of an infected person.

Is Bordetella catalase positive?

Bordetella hinzii also grows on MacConkey agar, and are positive for catalase, oxidase and assimilation of citrate adipate, L-malate and phenylacetate. They give variable results for urease production and do not reduce nitrates1.

What is the culture of Mexico?

The Mexicans truly believe that unity is strength. They help each other through difficulties, and are always there for each other through thick and thin. ◆ Mexicans are very proud of their customs and traditions. The elders of the family try their best to maintain them, and pass them on to the next generations.

What is the Mexican view of family life?

◆ Mexicans believe that any important decision in the family should be taken only after consulting all the members of the family. All relatives from both sides, the father’s and the mother’s, are considered as part of the family. Relatives and grandparents take active part in raising children.

What is the history of Mexico in ethnic relations?

History and Ethnic Relations. Emergence of the Nation. Mexican national culture slowly emerged from a process of accommodation between the indigenous cultures and the Spanish colonial domination that lasted three centuries. Mexico gained independence in 1821.

What is Staphylococcus aureus satellitism culture?

Staphylococcus aureus, produce NAD as a metabolic by product which diffuses into the surrounding medium and enhances growth of Haemophilus in the proximity of the Staphylococcus colony. The phenomenon is known as Satellitism Culture the sample containing H. influenzae in chocolate agar.