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Toda Strepdiag A

Infectious Diseases

Rapid Strep A Test

Toda Strepdiag A is an immunochromatographic test for the detection of Group A Streptococcus from an oropharyngeal swab.

  • Streptococcus pyogenes
  • Interpretation time
    5 minutes
  • Sampling
    Oropharyngeal swab

A rapid, accurate, and convenient test

The Benefits of Toda Strepdiag A.

CONVENIENT

Equipped with a pre-dosed reagent vial, the extraction solution requires only one preparation step.

EFFICIENT

Évite la multiplication des tests ce qui limite les coûts. 

ACCURATE, SENSITIVE, AND SPECIFIC

Sensitivity: 97.6%

Specificity: 97.5%

Accuracy: 97.5%

SIMPLE

Utilisation en 3 étapes sans complexité technique.

An accurate test starts with proper technique

Découvrez en 3 étapes simples comment utiliser le Toda Strepdiag A. 

This test is intended for use by healthcare professionals only.

Practical information

All Toda Toda Strepdiag A test kits contain: 

  • 25 tests in strip format
  • 25 tongue depressors
  • 25 swabs
  • 25 reagents: 1 buffer and 1 unidose
  • 1 stand for extraction tubes
  • 1 detailed instruction leaflet
  • 1 simplified operating procedure
  • 2 control solutions for Streptococcus A: 1 negative and 1 positive

References

  • Box of 25 tests: 1062

The test should be stored at room temperature (between +2 and +30 °C).

Helpful documents

Catalog & product sheet

Infectious Diseases Catalogue

Toda Strepdiag A Product Sheet

Download

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1. What is Streptococcus A?

Streptococcus A, or Streptococcus pyogenes, is a bacterium responsible for numerous human infections, ranging from benign to severe.  

Common infections:

  • Streptococcal pharyngitis (sore throat)
  • Scarlet fever
  • Impetigo (skin infection)
  • Otitis media, sinusitis

Severe infections:

  • Necrotizing fasciitis (“flesh-eating bacteria”)
  • Streptococcal toxic shock syndrome

The bacterium is transmitted via direct contact with respiratory secretions from an infected individual, or through skin wounds.

Streptococcus A or Streptococcus B refers to the classification of streptococci into groups A, B, C, etc., based on antigens present on the bacterial surface (known as Lancefield antigens).

  • Streptococcus A (Group A): corresponds to Streptococcus pyogenes, responsible for infections such as pharyngitis, impetigo, or, in severe forms, necrotizing fasciitis or toxic shock syndrome.
  • Streptococcus B (Group B): corresponds to Streptococcus agalactiae, often associated with neonatal infections (in newborns) or certain urinary tract infections in adults.

In summary, Streptococcus A is used to designate this specific type of bacterium due to its antigenic characteristics and the specific infections it causes. Each letter therefore corresponds to a group of bacteria with distinct properties and causing different diseases.

Streptococcus A can sometimes be found in unexpected places: some individuals are asymptomatic carriers, harboring the bacterium in their throat or on their skin without ever experiencing symptoms. While harmless to themselves, these carriers can nonetheless transmit the bacterium to others, who may then develop infections ranging from pharyngitis to more severe forms. This phenomenon explains why streptococcus spreads easily, particularly among children in schools or within families, and underscores the importance of rigorous hygiene and heightened vigilance, even when individuals appear healthy.

Prompt treatment of a Streptococcus A infection is crucial because early antibiotic therapy helps to:

  1. Prevent the infection from worsening, thereby limiting the risk of severe complications such as necrotizing fasciitis or toxic shock syndrome.
  2. Reduce the duration of symptoms, such as fever, sore throat, or skin pain.
  3. Limit the transmission of the bacterium to other individuals, particularly within the family or school environment.
  4. Prevent long-term complications, such as acute rheumatic fever or renal damage, which can occur if the infection remains untreated.

To date, there is no commercially available vaccine against Group A Streptococcus, although several projects are in advanced stages of clinical research.

Prevention therefore primarily relies on simple yet effective hygiene measures.

Regular and thorough hand washing with soap and water (or an alcohol-based hand rub) remains one of the most reliable methods to limit transmission. It is also recommended to cover one's mouth and nose with a disposable tissue or the crook of the elbow when sneezing or coughing, to prevent the dispersion of infectious droplets.

Affected individuals should avoid close contact with others until at least 24 hours after initiating antibiotic treatment, at which point they are generally no longer contagious. Furthermore, in communal settings (nurseries, schools, nursing homes), frequent cleaning of shared surfaces and objects helps reduce the risk of propagation.

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