Does Neisseria meningitidis grow on chocolate agar?

Does Neisseria meningitidis grow on chocolate agar?

meningitidis is a fastidious organism, which grows best at 35-37°C with ~5% CO2 (or in a candle-jar). It can grow on both a blood agar plate (BAP) and a chocolate agar plate (CAP).

Does Neisseria grow on chocolate agar?

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 agar is used for Neisseria meningitidis?

Blood agar plate (BAP): trypticase soy agar (TSA) + 5% sheep bloodA BAP is used as a general blood agar medium. It is used for growth and testing of N. meningitidis and S. pneumoniae.

Is the recommended antibiotic for prophylaxis in Neisseria meningitidis?

Ceftriaxone may provide an effective alternative to rifampin for prophylaxis in people in close contact with patients with meningococcal meningitis. Oily chloramphenicol may be the drug of choice in areas with limited health facilities, because a single dose of the long-acting form has been shown to be effective.

Why is chocolate agar used for Neisseria?

Chocolate Agar is an enriched general- purpose medium that supports the growth of most fastidious and non-fastidious organisms. Because it is a non-selective medium, resident flora from clinical specimens may overgrow potential fastidious pathogens, such as Neisseria species.

Why does Haemophilus influenzae grow on chocolate agar?

Growth occurs on a CAP because NAD is released from the blood during the heating process of chocolate agar preparation (the heating process also inactivates growth inhibitors) and hemin is available from non-hemolyzed as well as hemolyzed blood cells. Alternatively, NAD can be included as a component of liquid H.

Why do we prefer chocolate agar for culturing Haemophilus influenzae over blood agar?

Chocolate agar is prepared by heating blood agar, which in turn ruptures the red blood cell (RBC) and releases nutrients that aid in the growth of fastidious bacteria, most notably Haemophilus and Neisseria species. The name is derived from the fact that the lysis of RBC gives the medium a chocolate-brown color.

Does Neisseria gonorrhoeae grow on chocolate agar?

Red blood cell lysis gives the medium a chocolate-brown coloration when prepared from which the agar gets its name. The most common bacterial pathogens that require this enriched medium for growth include Neisseria gonorrhoeae and Haemophilus species.

What antibiotic covers Neisseria?

Meningococcal infections are usually treated with penicillin, ampicillin, or a combination of penicillin and chloramphenicol. Isolates of Neisseria meningitidis with increased levels of resistance to penicillin have been reported in the last few years, particularly from Spain and the United Kingdom (17, 20).

How is Neisseria meningitidis prevention?

Prevention. Keeping up to date with recommended vaccines is the best defense against meningococcal disease. Maintaining healthy habits, like getting plenty of rest and not having close contact with people who are sick, also helps.

Is chocolate agar selective media?