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Updated: Aug 21, 2026

Genome-wide Gene Deletions in Streptococcus sanguinis by High Throughput PCR
Published on: November 23, 2012
[Simplification of methods for the study of beta hemolytic Streptococcus in faryngeal exudate]
Abstract:
A procedure of possible epidemiological application is described. The material is taken from pharynx in infants in an attempt to control the serious problem of rheumatic fever in our environment. The investigation is carried out in two steps: in the first, the samples are inoculated in a selective medium impregnated in filter paper strips, from where they are transferred to blood agar plates where 15 to 20 inoculations may be practiced; with this, unnecessary waste of individual plates is avoided, as done following conventional methods. The equipment may be easily adapted for direct takings.
Insights
A new pharyngeal sampling method for infants aids in controlling rheumatic fever. This technique reduces waste by allowing multiple inoculations from a single filter paper strip.
Area of Science:
- Microbiology
- Epidemiology
- Pediatrics
Context:
- Rheumatic fever is a significant public health concern in pediatric populations.
- Current diagnostic methods for pharyngeal infections can be resource-intensive.
Purpose:
- To describe a novel, cost-effective procedure for pharyngeal sample collection and inoculation.
- To facilitate the epidemiological surveillance of potential rheumatic fever outbreaks in infants.
Summary:
- A two-step inoculation procedure using filter paper strips from pharyngeal samples in infants is presented.
- This method allows for 15-20 inoculations per blood agar plate, minimizing waste compared to conventional techniques.
- The procedure is adaptable for direct sample collection, enhancing its practical application.
Impact:
- Potential to improve the efficiency and reduce the cost of diagnosing and monitoring infections linked to rheumatic fever.
- Offers a scalable solution for epidemiological studies in resource-limited settings.
- Facilitates early detection and intervention strategies for pediatric rheumatic fever.

