Influenza, commonly known as "the flu", is an infectious disease caused by an influenza virus. SECTION I - INFECTIOUS AGENT. Haemophilus influenzae are pleomorphic gram-negative rods that commonly colonize and infect the human respiratory tract. Nevertheless, subsequent findings revealed that There are 12 serogroups of N. meningitidis that have been identified, 6 of which (A, B, C, W, X and Y) can cause epidemics. Haemophilus aphrophilus, H. paraphrophilus and H. parainfluenzae are occasionally implicated in infective endocarditis and in brain and liver abscesses. Haemophilus influenzae, a gram negative coccobacillus, is divided into unencapsulated (non-typable) and encapsulated strains. In 1920, the organism was named Haemophilus influenzae (from the Greek haemophilus, meaning "blood-loving") to reflect the fastidious growth requirement of the organism, as well as its apparent association with influenza.

An individual-based stochastic simulation model was constructed to study the epidemiology of Haemophilus influenzae type b (Hib) transmission, immunity and invasive disease. Transmission of Haemophilus Influenzae. Transmission of invasive Haemophilus influenzae type b disease in day care settings. Meningococcal meningitis can affect anyone of any age, … Haemophilus influenzae are pleomorphic gram-negative rods that commonly colonize and infect the human respiratory tract. … These symptoms typically begin two days after exposure to the virus and most last less than a week. Hib is transmitted from person to person through respiratory droplet spread. 22 Haemophilus ducreyi is the causative agent of chancroid. Haemophilus influenzae disease is a name for any illness caused by bacteria called H. influenzae.Some of these illnesses, like ear infections, are mild while others, like bloodstream infections, are very serious.

This bacterium is divided into typeable forms (such as type b) or nontypeable forms based on the presence or absence of a tough polysaccharide capsule.

The model classifies population members by age, colonization/disease status, and antibody levels, with movement across categories defined by … Haemophilus influenzae (H. influenzae) type B a non-motile, aerobic, gram negative cocobacillus is a commensal of upper respiratory tract. This disease can spread from person to person through sneezing, coughing, or speaking closely with an infected person. Among typeable strains, H. influenzae serotype b (Hib) is the most virulent. Haemophilus influenzae type b (Hib)—not to be confused with seasonal influenza—is a vaccine-preventable disease that is particularly dangerous for young children. INTRODUCTION. Symptoms can be mild to severe. The most common symptoms include: high fever, runny nose, sore throat, muscle and joint pain, headache, coughing, and feeling tired.

Reservoir of Haemophilus influenzae. Haemophilus influenzae disease is spread through contact with discharges or droplets from the nose or throat of an infected person. It may also be rarely acquired through contact with infected respiratory discharges. Haemophilus influenzae is present as a commensal organism in the nasopharynx of most healthy adults from where it can spread to cause both systemic and respiratory tract infection. The risk of subsequent transmission of Hemophilus influenzae type B disease among children in day care.

Mode of transmission of Haemophilus influenzae. In 1933, the discovery of the viral etiology of influenza eventually refuted this erroneous association. SYNONYM OR CROSS REFERENCE: Hib, meningitis, Haemophilus meningitis, childhood pneumonia, bacteremia, epiglottitis, septic arthritis, cellulitis, osteomyelitis, pericarditis, bacterial meningitis, Pfeiffer's bacillus Footnote 1 Footnote 2 Footnote 3 Footnote 4.. CHARACTERISTICS: Haemophilus influenzae type b (Hib) is a … NAME: Haemophilus influenzae (type b).

Embedded in a demographic model, the transmission model of Hib carriage employs the most important social mixing patterns with three types of contact sites (family, day-care group, and school class). Streptococcus pneumoniae, Haemophilus influenzae, Neisseria meningitidis are the most frequent ones. Agent: Haemophilus influenzae (bacteria) Mode of Transmission: Person-to-person transmission by inhalation of respiratory droplets or direct contact with nose and throat discharge during the infectious period. N. meningitidis, causing meningococcal meningitis, is the one with the potential to produce large epidemics.

In spite of the name, H. influenzae do not cause influenza (the flu).Vaccines can prevent one type of H. influenzae (type b or Hib) disease. Osterholm MT, Pierson LM, White KE, et al.

The latter are further classified into serotypes, with the Haemophilus influenzae serotype b being the most pathogenic for humans, responsible for respiratory infections, ocular infection, sepsis and meningitis. Haemophilus influenzae biogroup aegyptius (formerly Haemophilus aegyptius) is a cause of epidemic conjunctivitis and Brazilian purpuric fever.

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