Haemophilus influenzae

2020 ◽  
pp. 1066-1070
Author(s):  
Esther Robinson
Keyword(s):  
Infectious Disease ◽  
Haemophilus Influenzae ◽  
Disease Transmission ◽  
Febrile Illness ◽  
Human Pathogen ◽  
Infectious Disease Transmission ◽  
Gram Negative ◽  
Negative Bacillus ◽  
Gram Negative Bacillus ◽  
Bodily Contact

Haemophilus influenzae is a Gram-negative bacillus that is an exclusively human pathogen and commensal. There are six capsular serotypes (a–f), of which type b (Hib) is a major cause of childhood infectious disease. Transmission occurs by close bodily contact, the main source being other children. Carriage of the organism may be followed by disease in susceptible individuals. In infants, Hib causes symptoms ranging from a mild non-specific febrile illness (occult bacteraemia) to fully blown sepsis with meningitis, epiglottitis, pneumonia, septic arthritis, or cellulitis. Non-typeable H. influenzae are common nasopharyngeal commensals and cause otitis media and conjunctivitis in children. In adults, non-typeable H. influenzae cause exacerbations of chronic bronchitis, sinusitis, and pneumonia. Other Haemophilus species, including H. parainfluenzae, are common commensals and rare causes of infective endocarditis and other sepsis.

scholarly journals Sphingomonas paucimobilis complicating vaginal fluid cultivation. A rare case

2021 ◽  
Vol 5 (1) ◽  
pp. 01-03
Author(s):  
Chrisostomos Sofoudis
Keyword(s):  
Rare Case ◽  
Necessary Conditions ◽  
Opportunistic Pathogen ◽  
Vaginal Fluid ◽  
Sphingomonas Paucimobilis ◽  
Human Pathogen ◽  
Gram Negative ◽  
Negative Bacillus ◽  
Gram Negative Bacillus ◽  
Culture Positive

Sphingomonas paucimobilis represents an aerobic Gram-negative bacillus that is gaining recognition as an important human pathogen. These species are widely distributed in both natural environment and hospitals. They appear as opportunistic pathogen that take advantage of underlying conditions and diseases. Regardless of the clinical significance, pathogenic mechanism varies throughout current bibliography. Aim of our study, reflects presentation of a rare case of an out-patient clinical asymptomatic, with vaginal culture positive for this rare microorganism, S. paucimobilis. Assiduous diagnosis and therapeutic mapping consist necessary conditions of effective treatment.

Travel Connectivity and Infectious Disease Transmission Risks in Oceania

2020 ◽  
Author(s):  
Angela Maria Cadavid Restrepo ◽  
Luis Furuya-Kanamori ◽  
Helen Mayfield ◽  
Eric J. Nilles ◽  
Colleen L. Lau
Keyword(s):  
Infectious Disease ◽  
Disease Transmission ◽  
Infectious Disease Transmission

scholarly journals Bipolar staining of gram-negative bacillus in cerebrospinal fluid

Blood ◽  
2014 ◽  
Vol 124 (18) ◽  
pp. 2892-2892
Author(s):  
Lori D. Racsa ◽  
Eileen M. Burd
Keyword(s):  
Cerebrospinal Fluid ◽  
Gram Negative ◽  
Negative Bacillus ◽  
Gram Negative Bacillus

scholarly journals Meningitis Caused by Salmonella Newport in a Five-Year-Old Child

2016 ◽  
Vol 2016 ◽  
pp. 1-4
Author(s):  
Ana De Malet ◽  
Sheila Ingerto ◽  
Israel Gañán
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Neurological Disorders ◽  
Invasive Disease ◽  
Salmonella Typhi ◽  
Gram Negative ◽  
Negative Bacillus ◽  
Salmonella Newport ◽  
Gram Negative Bacillus ◽  
The Central Nervous System

Salmonella Newport is a Gram-negative bacillus belonging to the Enterobacteria family and the nontyphi Salmonella (NTS), usually related to gastroenteritis. Main difference between NTS and Salmonella typhi is that the last one evolves to an invasive disease easier than NTS. These can progress to bacteremias in around 5% of cases and secondary focuses can appear occasionally, as in meningitis. An infection of the central nervous system is uncommon, considering its incidence in 0.6–8% of the cases; most of them are described in developing countries and mainly in childhood, especially neonates. Bacterial meningitis by NTS mostly affects immunosuppressed people in Europe. Prognosis is adverse, with a 50% mortality rate, mainly due to complications of infection: hydrocephalus, ventriculitis, abscesses, subdural empyema, or stroke. Choice antibiotic treatments are cefotaxime, ceftriaxone, or ceftazidime. The aim of this paper is to present a case of meningitis caused by Salmonella Newport diagnosed in a five-year-old girl living in a rural area of the province of Ourense (Spain), with favorable evolution and without neurological disorders.

scholarly journals SPATIAL HETEROGENEITY IN SIMPLE DETERMINISTIC SIR MODELS ASSESSED ECOLOGICALLY

2012 ◽  
Vol 54 (1-2) ◽  
pp. 23-36 ◽  
Author(s):  
E. K. WATERS ◽  
H. S. SIDHU ◽  
G. N. MERCER
Keyword(s):  
Infectious Disease ◽  
Spatial Heterogeneity ◽  
Disease Transmission ◽  
Herd Immunity ◽  
Epidemic Models ◽  
Final Size ◽  
Infectious Disease Transmission ◽  
Epidemic Dynamics ◽  
Mean Crowding ◽  
Rate Of Movement

AbstractPatchy or divided populations can be important to infectious disease transmission. We first show that Lloyd’s mean crowding index, an index of patchiness from ecology, appears as a term in simple deterministic epidemic models of the SIR type. Using these models, we demonstrate that the rate of movement between patches is crucial for epidemic dynamics. In particular, there is a relationship between epidemic final size and epidemic duration in patchy habitats: controlling inter-patch movement will reduce epidemic duration, but also final size. This suggests that a strategy of quarantining infected areas during the initial phases of a virulent epidemic might reduce epidemic duration, but leave the population vulnerable to future epidemics by inhibiting the development of herd immunity.

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