How many serotypes of Neisseria meningitidis are there?

How many serotypes of Neisseria meningitidis are there?

Meningococcal disease is a serious and potentially life-threatening infection caused by the bacterium Neisseria meningitidis. N. meningitidis can be classified into 12 serogroups based on its capsular polysaccharide; serogroups A, B, C, W, X, and Y are the primary causes of meningococcal disease worldwide.

What serotypes of Neisseria meningitidis are most seen in the US?

There are multiple serogroups of Neisseria meningitidis. Serogroups B, C, and Y cause the majority of disease in the United States. Serogroup W and nongroupable strains cause a small portion of disease.

What kind of bacteria is Neisseria meningitidis?

Neisseria meningitidis, often referred to as meningococcus, is a Gram-negative bacterium that can cause meningitis and other forms of meningococcal disease such as meningococcemia, a life-threatening sepsis.

What are sero types?

Serotypes are groups within a single species of microorganisms, such as bacteria or viruses, which share distinctive surface structures.

Which N meningitidis serotype is invasive?

Neisseria meningitidis is a gram-negative bacterium that inhabits the mucosal surface of the nasopharynx in approximately 10% of healthy persons. The invasive meningococcal disease (IMD) is a severe form of Neisseria meningitidis infection, most commonly manifested as meningitis or septicemia.

Is Neisseria meningitidis viral or bacterial?

Bacteria called Neisseria meningitidis cause meningococcal disease. About 1 in 10 people have these bacteria in the back of their nose and throat without being ill. This is called being ‘a carrier’. Sometimes the bacteria invade the body and cause certain illnesses, which are known as meningococcal disease.

What is the structure of Neisseria meningitidis bacteria?

N. meningitidis is a gram-negative β proteobacterium and member of the bacterial family of Neisseriaceae. N. meningitidis is a fastidious bacterium, dying within hours on inanimate surfaces, and is either an encapsulated or unencapsulated, aerobic diplococcus with a “kidney” or “coffee-bean” shape (Fig.

What are the basic microbiological characteristics of Neisseria meningitidis?

CHARACTERISTICS: Neisseria meningitidis belongs to the family Neisseriaceae 2. It is a Gram-negative, non-spore forming, non-motile, encapsulated, and non acid-fast diplococci, which appears in kidney bean shape under the microscope 1 3.

Are there two types of meningitis?

Viral meningitis is the most common type of meningitis, followed by bacterial meningitis. Rarer types of meningitis include chemical and fungal meningitis. The most common types of bacterial meningitis are meningococcal, pneumococcal, TB, group B streptococcal and E. coli.

What are 2 types of meningitis?

Types of meningitis

• Viral meningitis. Viral meningitis is the most common type of meningitis.
• Bacterial meningitis. Bacterial meningitis is contagious and caused by infection from certain bacteria.
• Fungal meningitis. Fungal meningitis is a rare type of meningitis.
• Parasitic meningitis.
• Non-infectious meningitis.