Sore Throat in Children: Its Causation and Incidence

Ross, P. W.; Chisty, Shahnur; Knox, John M.

doi:10.1136/bmj.2.5762.624

Cited by 17 publications

(8 citation statements)

References 21 publications

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“…The widespread introduction of susceptibility to a bacitracin disc as a screening test for the presence of S pyogenes in throat swabs 10 led to group C species (which are mostly bacitracin resistant) being ignored. 11 Bacitracin susceptibility testing fell from favour as a screening test once latex agglutination methods had much simplified the procedure of determining the Lancefield group, but it had already been noted in 1969 that an animal species of bacitracin resistant, large colony group C streptococcus could cause sore throat, septicaemia, and post-streptococcal nephritis in humans. 12 So far the small number of reported cases of infection with this organism, since named Streptococcus zooepidemicus, has been confined to those who have either been in close contact with farm animals, or have drunk unpasteurised milk.…”

Section: Discussionmentioning

confidence: 99%

Group C streptococci isolated from throat swabs: a laboratory and clinical study.

Lewis

Balfour²

1999

J Clin Pathol

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Aims-To determine the prevalence of haemolytic, Lancefield group C streptococci in throat swabs taken in routine clinical practice, and correlate the species identified with presenting clinical features. Methods-One year, laboratory based prospective study, using a questionnaire to elicit clinical information. Results-4.4% of throat swabs yielded group C streptococci, of which 38% belonged to S equisimilis and 53% to S anginosus-milleri group (SAM). Pyrexia was more common in patients with S equisimilis, but other clinical features did not diVer significantly between the two groups. No S zooepidemicus was isolated. Conclusions-Species identification of group C streptococci from throat swabs does not appear to be clinically useful in this patient population. However, the prevalence and spectrum of organisms is similar to that reported in N America, where studies suggest a possible role in some cases of severe pharyngitis. Observational studies such as this lack power to resolve the issue of pathogenicity, for which a placebo controlled trial of antibiotic treatment is ideally required. (J Clin Pathol 1999;52:264-266)

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Section: Discussionmentioning

confidence: 99%

Group C streptococci isolated from throat swabs: a laboratory and clinical study.

Lewis

Balfour²

1999

J Clin Pathol

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“…A longitudinal study in North America reported that the proportion of GAbHS pharyngitis tended to not vary over the past 50 years, although the incidence of rheumatic fever and rheumatic heart disease in the uS decreased. 10 In Edinburgh (Scotlandia), Ross et al found an incidence of 30.0%, 17 but mcIsaac et al reported that an incidence of 17.0% in 2000 in Canada increased by 29.0% in 2004. 8 In addition, Jain et al found an incidence of 12.6% in India in 2008.…”

Section: Discussionmentioning

confidence: 99%

McIsaac criteria for diagnosis of acute group-A β-hemolytic streptococcal pharyngitis

Malino¹,

Utama²,

Soenarto³

2016

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“…During the summertime, the cases of GAS pharyngitis declined, reaching a minimum in September. This springtime preferential seasonality is different to that of the winter and early spring months in the classic reports of GAS sore throat (Ross et al 1971).…”

Section: Discussionmentioning

confidence: 92%

“…In general, a higher incidence of streptococcal sore throat during the late winter and early spring was reported in these studies (Ross et al 1971). More recently, reports from different parts of the world have added new information on seasonality.…”

Section: Introductionmentioning

confidence: 90%

Effects of meteorologic factors and schooling on the seasonality of group A streptococcal pharyngitis

et al. 2015

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The objective of this study was to determine the seasonal pattern of group A streptococcal pharyngitis in children attended at a hospital emergency department in the Mediterranean island of Mallorca (Spain), and its association with meteorologic factors and schooling. We conducted a retrospective review of the medical records of children aged 1-15 years with a diagnosis of Streptococcus pyogenes pharyngitis between January 2006 and December 2011. The number of S. pyogenes pharyngitis was correlated to temperature, humidity, rainfall, atmospheric pressure, wind speed, solar radiation, and schooling, using regression and time series techniques. A total of 906 patients (median, 4 years old) with S. pyogenes pharyngitis, confirmed by throat culture, were attended during the study period. A seasonal pattern was observed with a peak activity in June and a minimum in September. Mean temperature, solar radiation, and school holidays were the best predicting variables (R(2) = 0.68; p < 0.001). S. pyogenes activity increased with the decrease of mean temperature (z = -2.4; p < 0.05), the increase of solar radiation (z = 4.2; p < 0.001), and/or the decrease in school holidays (z = -2.4; p < 0.05). In conclusion, S. pyogenes pharyngitis had a clear seasonality predominating in springtime, and an association with mean temperature, solar radiation, and schooling was observed. The resulting model predicted 68 % of S. pyogenes pharyngitis.

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Sore Throat in Children: Its Causation and Incidence

Cited by 17 publications

References 21 publications

Group C streptococci isolated from throat swabs: a laboratory and clinical study.

Group C streptococci isolated from throat swabs: a laboratory and clinical study.

McIsaac criteria for diagnosis of acute group-A β-hemolytic streptococcal pharyngitis

Effects of meteorologic factors and schooling on the seasonality of group A streptococcal pharyngitis

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