Strep A is a common bacterial infection, often referred to as strep throat. It’s most common in children, but adults can also be affected, especially in households with school-aged kids or shared environments where infections spread easily.
While many sore throats are mild and caused by a viral infection, Strep A is different. It requires medical treatment and, if left untreated, can sometimes lead to further health complications.
This article explains what Strep A is, how it affects the body, the symptoms to watch for, how it spreads, and how testing can help guide treatment.
What is Strep A?
Strep A is caused by a bacterium called Streptococcus pyogenes. It belongs to a group of bacteria known as Group A Streptococcus, which is why it’s commonly referred to as Strep A.
Strep A most often infects the throat and tonsils, causing strep throat, but it can also affect the skin and other parts of the body.
Is Strep A Contagious?
Yes, Strep A is highly contagious.
It spreads through:
- Coughing and sneezing
- Close contact with someone who is infected
- Sharing drink bottles, utensils, towels, or bedding
This is why Strep A spreads quickly in:
- Schools and early childhood centres
- Households
- Sports teams and shared living environments
Is Strep A More Contagious in Children?
Strep A is more commonly spread among children, particularly those aged 5–15 years. Schools, early childhood centres, and shared home environments create close-contact settings where the bacteria can pass easily through coughing, sneezing, and shared items.
Children are also more likely to have close physical contact and less consistent hygiene habits, which increases transmission. Early testing and keeping children home when unwell help reduce the spread within families and classrooms.
Strep Throat: What Does It Feel Like?
Strep throat often comes on suddenly and can feel more severe than a typical sore throat.
Common Strep A symptoms include:
- Sudden sore throat
- Pain when swallowing
- Fever
- Red, swollen tonsils
- White patches or pus on the tonsils
- Swollen glands in the neck
Unlike sore throats from viral infections, strep throat usually does not come with a cough or runny nose, a key difference many people notice.
Test for Peace of Mind
While these symptoms can be distressing, you don’t have to guess. Getting a clear answer helps you manage the infection and protect those around you.
The Smith BioMed Strep A Rapid Test allows you to identify the infection in just 5 minutes with clinical-grade accuracy, giving you the clarity needed to take the next step in your health journey. If your test result is positive, make an urgent appointment with your GP for antibiotic treatment and follow-up.
Strep A vs a Viral Sore Throat
Not all sore throats are Strep A; some are caused by a viral infection. These are the most common differences.
Viral sore throats:
- Often include coughing, runny nose, or hoarseness
- Tend to improve on their own
- Do not require antibiotics
Strep A sore throats:
- Start suddenly
- Often include fever and swollen glands
- Require antibiotics to clear the infection
Testing helps determine whether symptoms are caused by Strep A.
Why Testing is Essential
While Strep A is usually easy to treat, untreated Strep A can lead to complications, including:
- Rheumatic fever
- Kidney inflammation
- Peritonsillar abscess
- Spread of infection to other areas
Early detection allows for timely treatment and helps reduce the risk of spreading the infection to others.
How is Strep A Diagnosed?
Testing for Strep A Infection
Strep A is diagnosed by detecting Strep A antigens from a throat swab sample.
Common testing methods include:
- Rapid strep throat tests
- Laboratory throat cultures (which can take 24–48 hours)
Rapid tests such as the Smith BioMed Strep A Rapid Test are widely used because they provide results quickly and don’t require a doctor’s appointment.
How to Check for Strep A at Home
Strep Throat Testing with Smith BioMed.
The Smith BioMed Strep A rapid test uses a throat swab to detect Strep A antigens.
How it works:
- A throat swab sample is collected
- The test will show either a negative or positive result for Strep A antigens
- Results are available in around 5 minutes
If your test result is positive, make an urgent appointment with your GP for antibiotic treatment and follow-up.
Frequently Asked Questions (FAQs)
What is Strep A?
Strep A is a bacterial infection caused by Streptococcus pyogenes. It most commonly causes strep throat, but can also affect other areas of the body.
Is Strep A serious?
Most cases are mild when treated promptly. However, untreated Strep A can sometimes lead to serious complications, which is why early detection is important.
Can adults get Strep A?
Yes. Although Strep A is more common in children, adults can catch it, especially parents, caregivers, teachers, and healthcare workers.
How long is Strep A contagious?
Strep A is contagious until antibiotic treatment has started and symptoms begin to improve. A healthcare professional can provide guidance on when it’s safe to return to school or work.
What should I do if symptoms don’t improve?
If symptoms persist, worsen, or don’t match your test result, see your GP. Further assessment may be needed.
At-Home Strep A Testing with Smith BioMed
When sore throat symptoms appear, Smith BioMed’s Strep A Rapid Test offers a quick and affordable way to test for Strep A at home.
With results available in just 5 minutes, it can help inform whether follow-up with a healthcare professional is needed.
Smith BioMed tests are available at Chemist Warehouse, selected local pharmacies, and online across New Zealand, making timely Strep A testing more accessible and early detection simpler.