Group A streptococcus (or group A strep) is a type of bacterium (germ) that commonly lives on our skin or in our nose and throat. Many of us carry this bacteria but never become ill. Strep A infections vary in severity from very mild - such as throat infections - to severe such as pneumonia, but fortunately most can be treated with antibiotics.
Many people carry group A Strep without realizing it - it causes no problems and they remain well and don’t develop any illness. It can be passed from person to person by close contact with someone who has Strep A such as by kissing or from skin to skin contact. Strep A can also sometimes be spread through food if someone infected with group A strep prepares or serves food which is then shared.
Although most people exposed to Strep A have either no symptoms or mild ones, you’re more likely to be at risk from it if you:
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Fortunately for most people, being in contact with Strep A either doesn’t cause any symptoms or only a mild illness. The usual mild illnesses include:
More severe illnesses linked to Strep A are called invasive group A Strep (IGAS), where deeper tissues or organs are infected. These include:
pneumonia - a lung infection causing breathing difficulties, cough and a high temperature.
meningitis - a potentially fatal infection of the fluid that surrounds the brain, causing headache, neck pain and stiffness, fever and confusion.
necrotizing fasciitis - a severe skin and muscle infection where there is a high temperature and skin pain, and potentially destruction of skin and tissue.
Streptococcal Toxic Shock Syndrome (STSS) a blood infection that can cause fever, confusion, abdominal pain, and a rash. It can cause failure of the kidneys, liver and lungs.
It’s usually diagnosed by taking a swab of affected tissue or saliva and checking it for the presence of Strep A. You can also have a blood test to see if your immune system has produced certain antibodies in response to a strep A infection. If a more serious invasive Strep A infection is a possibility, you can also have blood tests to see if you have the bacteria in your blood.
Fortunately, most minor strep A infections usually get better on their own after a few days without needing any medical treatment. To help relieve any symptoms while this is happening you can take nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen and also acetaminophen to help reduce a high temperature and discomfort. Please note that aspirin should not be given to children aged under 16 because of the risk of Reyes’ syndrome. If you have a skin infection this may require treatment with antibiotic tablets or creams and if you have a ‘strep throat’ stay home from work or school until after you have taken antibiotics for 24 hours as this reduces the chance of you giving the infection to someone else. Always take any prescribed antibiotics as directed.
If you have strep throat you’re not fit for work.
Your doctor may prescribe antibiotics for a strep throat, but your pharmacist may also suggest some other things to help improve your symptoms while you're getting back to normal. These could include:
Contact your doctor urgently or go to your nearest emergency center if your child:
Because strep A is spread by close contact - such as from skin-to-skin contact or from inhaling infected respiratory droplets from someone else - there are ways of helping to reduce this risk:
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