scholarly journals Echovirus type 11 infection in Melbourne–1953 to 1980

1981 ◽  
Vol 87 (2) ◽  
pp. 305-312 ◽  
Author(s):  
M. L. Kennett ◽  
A. Donaldson ◽  
J. A. Marshall ◽  
H. G. Williamson
Keyword(s):  
Electron Microscopy ◽  
Cerebrospinal Fluid ◽  
Cell Line ◽  
Aseptic Meningitis ◽  
Respiratory Infections ◽  
Respiratory Illness ◽  
Viral Meningitis ◽  
Immune Electron Microscopy ◽  
Reception Centre ◽  
Echovirus Type

SummaryEchovirus type 11 (echo 11) has been isolated at the virus laboratory of Fairfield Hospital, Melbourne, Australia, in 20 of the 28 years since the laboratory was established. During this time two major epidemics have occurred; the first, in 1971–2 involved 90 patients with aseptic meningitis or respiratory illness. The second began in June 1979 and lasted for 11 months, during which echo 11 was isolated from 174 patients admitted to Fairfield Hospital, other Victorian and Tasmanian hospitals and a children's reception centre. The patients' illnesses included viral meningitis (66%), fever (10%), respiratory infections (7%) and gastroenteritis (2%). One baby died.Echo 11 was recovered from nasopharyngeal swabs or aspirates, cerebrospinal fluid and faecal specimens and was isolated most frequently in the Borrie cell line. Isolates were readily identified by immune electron microscopy and/or neutralization tests.

scholarly journals Laboratory surveillance of viral meningitis by examination of cerebrospinal fluid in Cape Town, 1981–9

1993 ◽  
Vol 111 (2) ◽  
pp. 357-371 ◽  
Author(s):  
J. P. McIntyre ◽  
G. A. Keen
Keyword(s):  
Cerebrospinal Fluid ◽  
Aseptic Meningitis ◽  
Laboratory Data ◽  
Cape Town ◽  
Viral Meningitis ◽  
Laboratory Surveillance ◽  
Coxsackie B

SummaryNine years accumulated laboratory data derived from the culture of the cerebrospinal fluid of 11 360 aseptic meningitis cases were retrospectively reviewed to establish the epidemiology of viral meningitis in Cape Town. Virus was isolated from 3406 of the cases (91% enteroviruses and 9% mumps).Five major summer viral meningitis episodes were documented: two of echovirus 4 (706 and 445 cases), echovirus 9 (223), coxsackie A9 (104) and one of unidentified enterovirus (324 cases – probably echo 9). Although coxsackie B was endemic, clusters of one or other type were dominant at any one time. Mumps was endemic. Sixty-two percent of all viral cases were <5 years old. The median ages of 4 and 5 years in echoviruses 9 and 4 (the epidemic strains) contrasted with that of 1 year in coxsackie B (with many cases <3 months old). Mumps peaked at 3–4 years of age. Males dominated overall, particularly in mumps.

scholarly journals Comparison of enterovirus detection in cerebrospinal fluid with Bacterial Meningitis Score in children

2017 ◽  
Vol 15 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Frederico Ribeiro Pires ◽  
Andréia Christine Bonotto Farias Franco ◽  
Alfredo Elias Gilio ◽  
Eduardo Juan Troster
Keyword(s):  
Cerebrospinal Fluid ◽  
Bacterial Meningitis ◽  
Aseptic Meningitis ◽  
Medical Records ◽  
Pediatric Patients ◽  
Tertiary Hospital ◽  
Viral Meningitis ◽  
Parenteral Antibiotic ◽  
Score Analysis

ABSTRACT Objective To measure the role of enterovirus detection in cerebrospinal fluid compared with the Bacterial Meningitis Score in children with meningitis. Methods A retrospective cohort based on analysis of medical records of pediatric patients diagnosed as meningitis, seen at a private and tertiary hospital in São Paulo, Brazil, between 2011 and 2014. Excluded were patients with critical illness, purpura, ventricular shunt or recent neurosurgery, immunosuppression, concomitant bacterial infection requiring parenteral antibiotic therapy, and those who received antibiotics 72 hours before lumbar puncture. Results The study included 503 patients. Sixty-four patients were excluded and 94 were not submitted to all tests for analysis. Of the remaining 345 patients, 7 were in the Bacterial Meningitis Group and 338 in the Aseptic Meningitis Group. There was no statistical difference between the groups. In the Bacterial Meningitis Score analysis, of the 338 patients with possible aseptic meningitis (negative cultures), 121 of them had one or more points in the Bacterial Meningitis Score, with sensitivity of 100%, specificity of 64.2%, and negative predictive value of 100%. Of the 121 patients with positive Bacterial Meningitis Score, 71% (86 patients) had a positive enterovirus detection in cerebrospinal fluid. Conclusion Enterovirus detection in cerebrospinal fluid was effective to differentiate bacterial from viral meningitis. When the test was analyzed together with the Bacterial Meningitis Score, specificity was higher when compared to Bacterial Meningitis Score alone.

scholarly journals First epidemic of aseptic meningitis due to echovirus type 13 among Spanish children

2003 ◽  
Vol 130 (2) ◽  
pp. 251-256 ◽  
Author(s):  
G. TRALLERO ◽  
I. CASAS ◽  
A. AVELLÓN ◽  
C. PÉREZ ◽  
A. TENORIO ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Aseptic Meningitis ◽  
Canary Islands ◽  
Attack Rate ◽  
Index Case ◽  
Severe Illness ◽  
Peak Incidence ◽  
First Time ◽  
Echovirus Type

Echoviruses are the commonest cause of aseptic meningitis (AM). Echovirus type 13 (EV-13) was the second enterovirus serotype associated with different local outbreaks of AM in Spain between February and October 2000. It was the first time that an epidemic AM caused by this virus was recognized in Spain. The index case appeared in the Canary Islands (Canarias). The EV-13 virus was isolated from 135 patients, predominantly from cerebrospinal fluid (CSF). All isolates were from children under 13 years. The age specific peak incidence was in infants under 1 year. Most patients had fever, headache and other meningeal signs. This enterovirus serotype, not previously detected in Spain, caused severe illness with a high attack rate.

scholarly journals Cerebrospinal fluid procalcitonin: a promising diagnostic tool in differentiating bacterial from aseptic meningitis

2019 ◽  
Vol 6 (5) ◽  
pp. 1807
Author(s):  
Mudasir Ahmad ◽  
Syed Wajid Ali ◽  
Javeed Iqbal ◽  
Feroz Ahmad Wani ◽  
Javeed Ahmad
Keyword(s):  
Cerebrospinal Fluid ◽  
Bacterial Meningitis ◽  
Aseptic Meningitis ◽  
Diagnostic Marker ◽  
Statistical Tests ◽  
Viral Meningitis ◽  
Jammu And Kashmir ◽  
The Mean ◽  
Control Prospective Study

Background: Procalcitonin in cerebrospinal fluid has been evaluated with regard to its usefulness in distinguishing between the possible causative organisms for infections. CSF PCT as a diagnostic marker has also been evaluated for differentiating bacterial from viral meningitis with conflicting results obtained so far. The current study was designed to see the role of procalcitonin as diagnostic marker and in differentiating bacterial from aseptic meningitis in pediatric age group.Methods: Children from 5 months to 15 years of age who were suspected cases of meningitis and were admitted to Pediatric Department in SKIMS Srinagar, Jammu and Kashmir were included in this case control prospective study conducted from 2014 to 2016. The total number of 200 children participated in the study among which 100 were cases and 100 controls. Serum and CSF PCT was measured by a fluorescence immunoassay using QDX Instacheck with a detection limit of 0.25-100 ng/ml. Data was analyzed by using standard statistical tests using SPSS 20.Results: The mean CSF PCT in ng/ml in our study for viral meningitis was 0.59±0.43 (range=0.00-1.90), for bacterial meningitis 4.92±1.50 (range=2.89-10.82) and for controls 0.22±0.11 (range=0.00-0.32), respectively. CSF PCT was significantly higher in viral and bacterial meningitis as compared to controls (p<0.01) and significantly higher in bacterial meningitis as compared to viral meningitis (p<0.01). An AUC of 1.000 was established using serum and CSF PCT for bacterial meningitis. The diagnostic accuracy of serum and CSF PCT was almost 100% at cut-off of 2.2 ng/ml and 2.89 ng/ml, respectively.Conclusions: Author have concluded that CSF PCT can be used as a diagnostic marker with better results in differentiation of bacterial from aseptic meningitis. 

scholarly journals The Prevalence of Viruses in the Cerebrospinal Fluid of Children with Aseptic Meningitis in Shiraz, Iran

2020 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Anahita Sanaei Dashti ◽  
Masoomeh Khalifeh ◽  
Elham Yousefifar ◽  
Mohammad Rahim Kadivar ◽  
Marzieh Jamalidoust ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Real Time ◽  
Aseptic Meningitis ◽  
Real Time Pcr ◽  
Laboratory Data ◽  
Rapid Test ◽  
Viral Meningitis ◽  
Common Causes ◽  
Causative Agents ◽  
Meningitis In Children

Objectives: The current study aimed to evaluate the causative agents of viral meningitis through real-time PCR among children with aseptic meningitis. Methods: Children aged 1 month to 16 years with suspected viral meningitis were enrolled in this study (March 2014-February 2015). Cerebrospinal fluid samples were analyzed by real-time PCR for detection of enterovirus, mumps, measles, adenovirus, EBV, CMV, VZV, hhv 6, and rubella viruses. Demographic information, laboratory data, and clinical presentations of patients were also collected. Results: Of 56 patients suspected to viral meningitis, 21 (38.9 %) had a positive PCR result. Enterovirus (42.85%) and mumps (38.1%) were the most prevalent viruses, and VZV and measles were not detected. Three children were coinfected with enterovirus/hhv6, enterovirus/EBV, and mump/adenovirus. Fever, headache, and nausea/vomiting were the most common symptoms in children. The rates of symptoms were not statistically significant among children with positive and negative PCR tests. Conclusions: In the present study Enterovirus and mumps viruses were the most common causes of viral meningitis in children. PCR, as a rapid test for the diagnosis of viral meningitis, can be used to decrease hospitalization length.

Immune Electron Microscopy (IEM) of a Canine Adeno-Associated Virus

1974 ◽  
Vol 32 ◽  
pp. 256-257
Author(s):  
Gunter F. Thomas ◽  
M. David Hoggan
Keyword(s):  
Electron Microscopy ◽  
Cell Cultures ◽  
Complement Fixation ◽  
Hepatitis Virus ◽  
Wide Distribution ◽  
Immune Electron Microscopy ◽  
Adeno Associated Virus ◽  
Virus Like Particle ◽  
Dog Kidney ◽  
Green Monkeys

In 1968, Sugimura and Yanagawa described a small 25 nm virus like particle in association with the Matsuda strain of infectious canine hepatitis virus (ICHV). Domoto and Yanagawa showed that this particle was dependent on ICHV for its replication in primary dog kidney cell cultures (PDK) and was resistant to heating at 70°C for 10 min, and concluded that it was a canine adeno-associated virus (CAAV). Later studies by Onuma and Yanagawa compared CAAV with the known human serotypes (AAV 1, 2, 3) and AAV-4, known to be associated with African Green Monkeys. Using the complement fixation (CF) test, they found that CAAV was serologically related to AAV-3 and had wide distribution in the dog population of Japan.

Immune electron microscopy of haemocyanins from two southern african whelks

1978 ◽  
Vol 36 (2) ◽  
pp. 158-159
Author(s):  
Linda M. Stannard ◽  
Margaret Lennon
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Outer Ring ◽  
Immune Electron Microscopy ◽  
Intertidal Zones ◽  
Central Belt ◽  
Cape Peninsula ◽  
Circular Contour

Burnupena cincta and Fusus verruculatus are two whelks which inhabit the intertidal zones of the Cape Peninsula shore. Their respiratory pigments, or haemocyanins, are morphologically similar in structure (Figs. 1 and 2) and appear in the electron microscope as short cylindrical rods about 34 nm in diameter and 36 nm high. Viewed side-on the molecules show regular banding suggesting a structure composed of six equidistant rings of sub-units. Occasionally the particles have the appearance of possessing a central “belt” in the position of the 3rd and 4th rows of sub-units. End-on views of the haemocyanin molecules show a circular contour with a dense outer ring and a less dense inner ring in which 10 definite sub-units may frequently be distinguished. A number of molecules display an extra central inner component which appears either as a diffuse plug or as a discrete ring-shaped core ± 8 nm in diameter.

Aberrant Type C Virus Production in a Cell Line Derived from Balb/3T3

1972 ◽  
Vol 30 ◽  
pp. 286-287
Author(s):  
N. Savage ◽  
A. Hackett
Keyword(s):  
Electron Microscopy ◽  
Cell Line ◽  
Leukemia Virus ◽  
Morphological Characteristics ◽  
Virus Production ◽  
Oncogenic Viruses ◽  
Endogenous Virus ◽  
Virus Particles ◽  
Moloney Leukemia Virus ◽  
A Cell

A cell line, UC1-B, which was derived from Balb/3T3 cells, maintains the same morphological characteristics of the non-transformed parental culture, and shows no evidence of spontaneous virus production. Survey by electron microscopy shows that the cell line consists of spindle-shaped cells with no unusual features and no endogenous virus particles.UC1-B cells respond to Moloney leukemia virus (MLV) infection by a change in morphology and growth pattern which is typical of cells transformed by sarcoma virus. Electron microscopy shows that the cells are now variable in shape (rounded, rhomboid, and spindle), and each cell type has some microvilli. Virtually all (90%) of the cells show virus particles developing at the cell surface and within the cytoplasm. Maturing viruses, typical of the oncogenic viruses, are found along with atypical tubular forms in the same cell.

Application of solid-phase immune electron microscopy to study physical and stability characteristics of enterically transmitted non-a, non-b hepatitis virus

1988 ◽  
Vol 46 ◽  
pp. 80-81
Author(s):  
Charles D. Humphrey ◽  
E. H. Cook ◽  
Karen A. McCaustland ◽  
Daniel W. Bradley
Keyword(s):  
Electron Microscopy ◽  
Hepatitis A ◽  
Hepatitis A Virus ◽  
Solid Phase ◽  
Etiologic Agent ◽  
World Health ◽  
Health Concern ◽  
Morphological Identification ◽  
Immune Electron Microscopy

Enterically transmitted non-A, non-B hepatitis (ET-NANBH) is a type of hepatitis which is increasingly becoming a significant world health concern. As with hepatitis A virus (HAV), spread is by the fecal-oral mode of transmission. Until recently, the etiologic agent had not been isolated and identified. We have succeeded in the isolation and preliminary characterization of this virus and demonstrating that this agent can cause hepatic disease and seroconversion in experimental primates. Our characterization of this virus was facilitated by immune (IEM) and solid phase immune electron microscopic (SPIEM) methodologies.Many immune electron microscopy methodologies have been used for morphological identification and characterization of viruses. We have previously reported a highly effective solid phase immune electron microscopy procedure which facilitated identification of hepatitis A virus (HAV) in crude cell culture extracts. More recently we have reported utilization of the method for identification of an etiologic agent responsible for (ET-NANBH).

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