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2016•Journal of Tropical PediatricsOpen access

Genetic Diversity among Group A Streptococcus Isolated from Throats of Healthy and Symptomatic Children

Smriti Chauhan, Nitin Kumar Kashyap, Anil Kanga, Kamlesh Thakur, Anuradha Sood, Lata R. Chandel

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Abstract

BACKGROUND: Group A streptococcus (GAS) is the commonest bacterial cause of pharyngitis. Children in the age group of 5-15 years are most commonly affected. It can also colonize throats of healthy children in this age group. Both cases and carriers can transmit it in the community. METHODS: Throat swab samples were collected from 1849 asymptomatic and 371 symptomatic children. RESULTS: The rate of isolation of GAS was 1.41% among the asymptomatic group and 7.55% among the symptomatic group. Nine different emm types were encountered in the asymptomatic children and 14 among the symptomatic children. CONCLUSION: Throat swab cultures must be used in all cases of pharyngitis. Early and appropriate antibiotic therapy will prevent complications. Asymptomatic throat carriage of GAS in children was low in our study. However, they can still act as reservoirs. Emm typing helps in understanding epidemiology and finding new types.

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What this paper is about

BACKGROUND: Group A streptococcus (GAS) is the commonest bacterial cause of pharyngitis. Children in the age group of 5-15 years are most commonly affected. It can also colonize throats of healthy children in this age group. Both cases and carriers can transmit it in the community. METHODS: Throat swab samples were collected from 1849 asymptomatic and 371 symptomatic children. RESULTS: The rate of isolation of GAS was 1.41% among the asymptomatic group and 7.55% among the symptomatic group. Nine different emm types were encountered in the asymptomatic children and 14 among the symptomatic children. CONCLUSION: Throat swab cultures must be used in all cases of pharyngitis. Early and appropriate antibiotic therapy will prevent complications. Asymptomatic throat carriage of GAS in children was low in our study. However, they can still act as reservoirs. Emm typing helps in understanding epidemiology and finding new types.

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Available abstract

BACKGROUND: Group A streptococcus (GAS) is the commonest bacterial cause of pharyngitis. Children in the age group of 5-15 years are most commonly affected. It can also colonize throats of healthy children in this age group. Both cases and carriers can transmit it in the community. METHODS: Throat swab samples were collected from 1849 asymptomatic and 371 symptomatic children. RESULTS: The rate of isolation of GAS was 1.41% among the asymptomatic group and 7.55% among the symptomatic group. Nine different emm types were encountered in the asymptomatic children and 14 among the symptomatic children. CONCLUSION: Throat swab cultures must be used in all cases of pharyngitis. Early and appropriate antibiotic therapy will prevent complications. Asymptomatic throat carriage of GAS in children was low in our study. However, they can still act as reservoirs. Emm typing helps in understanding epidemiology and finding new types.

Key concepts: Asymptomatic, Medicine, Throat, Pharyngitis, Carriage, Throat culture, Streptococcus, Group A

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