Streptococcal Infections

What are streptococcal infections?

From: MedlinePlus, National Library of Medicine

Strep is short for Streptococcus, a type of bacteria that often lives in your nose and throat. Most strep infections are mild, but some may become serious depending on your overall health.

There are several types of strep. Two of them cause most of the strep infections in people: group A and group B.

How do streptococcal infections spread?

From: MedlinePlus, National Library of Medicine

There are different ways that streptococcal infections may spread:

• Group A strep can be spread from a person who has the infection, even if they don't feel sick, when: They cough or sneeze You share a glass or utensil with them You touch something with the bacteria on it and then touch your eyes, mouth, or nose You touch their open wound or sore
• Group B strep can be passed to a newborn through fluids during a vaginal birth

Who is more likely to get a streptococcal infection?

From: MedlinePlus, National Library of Medicine

• Group A strep infections are most common in children ages 5 to 15, but adults can get them too. You may be at higher risk if you have a weakened immune system, open sores or wounds, or certain viral infections such as a cold or flu.
• Group B strep is most often a concern for newborns. Adults can also get group B strep infections, especially those 65 or older or who already have other health problems.

What are the symptoms of streptococcal infections?

From: MedlinePlus, National Library of Medicine

Symptoms depend on the type of infection. Most group A strep infections are mild, but some can be serious.

Group A strep may cause:

Group B strep may cause:

• Strep throat. A sore, red throat. Your tonsils may be swollen and have white spots on them.
• Scarlet fever. An illness that follows strep throat. It causes a red rash that spreads across the body.
• Impetigo. A skin infection that causes sores or blisters, often around the mouth, nose, or on the arms and legs.
• Cellulitis. A skin infection that causes redness, swelling, and pain, usually on the legs.
• Necrotizing fasciitis (flesh-eating disease). A rare but serious infection that spreads quickly through the skin and tissue.
• Streptococcal toxic shock syndrome. A rare but life-threatening illness where the bacteria release toxins that can cause organ failure.
• Blood infections, pneumonia and meningitis in newborns
• Urinary tract infections, blood infections, skin infections, and pneumonia in adults

How are streptococcal infections diagnosed?

From: MedlinePlus, National Library of Medicine

Group A strep. How strep is diagnosed depends on the type of infection. Your healthcare provider will usually diagnose strep throat with a rapid test or a throat culture. Other strep infections may require a physical exam, lab tests, imaging, or in some cases, surgery.

Group B strep. If you are pregnant, your provider will typically screen you for group B strep around 36 to 37 weeks.

What are the treatments for streptococcal infections?

From: MedlinePlus, National Library of Medicine

Your treatment will depend on the type of infection:

• Group A strep infections often go away on their own after about a week. If you need treatment, your provider will likely prescribe antibiotics. More serious (invasive) group A strep infections may require you to receive antibiotics in a hospital. Without treatment, these infections can lead to serious health problems.
• Group B strep infections in pregnant women are treated with intravenous (IV) antibiotics during labor to protect the newborn. Adults with group B strep infections are also treated with antibiotics.

Can streptococcal infections be prevented?

From: MedlinePlus, National Library of Medicine

You can help prevent some group A strep infections by practicing good hygiene habits, including:

• Avoiding close contact with someone who has an infection
• Washing your hands often with soap and water
• Covering your mouth and nose when you cough or sneeze

To help prevent group B strep infections in newborns, you should get screened during pregnancy. If you test positive, antibiotics given during labor can protect your baby.

Which doctor should you see?

The suggested department for discussing Streptococcal Infections is Infectious Diseases, with a general physician / infectious disease specialist as the relevant type of clinician. General physician / Family Medicine; paediatrician for children. Referral depends on symptoms.

This is an editorial referral starting point. The appropriate clinic depends on the person’s age, symptoms, previous diagnosis and local services. The first clinician can decide whether another specialty or a team is needed; a department label does not confirm the diagnosis.

How to prepare for an assessment

Bring a short timeline of the main symptoms: when they first appeared, whether they are constant or episodic, what seems to change them, and how they affect daily activities. Include previous reports, discharge summaries, current medicines and supplements, allergies, and any relevant family history. A dated record is more useful than trying to match every feature in an online article.

Ask the clinician what is already established and what remains uncertain. If a test is suggested, ask what question it answers, what its limitations are and how the result would change the next step. The information here is not an instruction to arrange every possible test. In children, bring growth, developmental and school information if it is relevant to the concern.

• Which exposure or organism is suspected, and what evidence would confirm it?
• Are precautions, vaccination or advice for close contacts relevant to this infection?
• What should happen if symptoms worsen or do not improve as expected?

Treatment discussions and follow-up

Where the source describes treatments, these are an overview of possible care, not a prescription for an individual. Ask which option applies to the confirmed diagnosis, what benefit is expected, what adverse effects to watch for and how progress will be assessed. Availability, approvals and local practice can differ from the country described in the source.

Before leaving the appointment, clarify the next review date, who will communicate results, and whom to contact if the situation changes. Discuss difficulties with sleep, work, school, mobility, eating or emotional wellbeing when these are relevant. Practical support may require coordination between the treating clinician and other services.

When to seek emergency help

Severe breathing difficulty, collapse, new stroke-like symptoms, a seizure that is prolonged or repeated without recovery, uncontrolled major bleeding, or an immediate risk of self-harm require emergency help. In India, call 112 or reach the nearest emergency department. This is a general, non-exhaustive warning list; it is not a condition-specific triage tool.