Strep throat is caused by infection with a bacterium known as Streptococcus pyogenes, also called group A streptococcus. Streptococcal bacteria are contagious. They can spread through droplets when someone with the infection coughs or sneezes, or through shared food or drinks.
So, you can get strep throat from your own dormant bacteria or from another person who has an active infection.
Key messages. Invasive group A streptococcal disease (iGAS) including cases of severe illness, particularly among children, continues to be observed in Victoria. iGAS is caused by infection with a bacterium known as Group A Streptococcus (GAS), which also commonly causes skin and throat infections.
Yes, strep throat is contagious. The illness can spread quickly from person to person in households, classrooms, day care facilities, military training camps and other settings where groups of people are close to one another, particularly where children are present.
Strep throat can be contagious for about 2-3 weeks in individuals who are not taking antibiotics. However, individuals who do take antibiotics for strep throat usually are no longer contagious about 24- 48 hours after initiating antibiotic therapy.
Caused by the group A streptococcus bacteria, strep throat is an infection that requires prompt treatment, particularly in children over the age of 3. Left untreated, strep throat can lead to kidney inflammation or rheumatic fever, a serious illness that can cause stroke and permanent damage to the heart.
The underlying difference between strep throat and sore throat is that it is strep caused by group A streptococcus bacteria, while other sore throats are caused by other types of bacteria, viruses or irritants like allergies. Different types of pharyngitis also require different treatment plans and medications.
Strep throat typically goes away in three to seven days with or without antibiotic treatment. However, if you don't take antibiotics, you can remain contagious for two to three weeks and are at a higher risk for complications, such as rheumatic fever.
Strep throat and scarlet fever are most common in children between the ages of 5 and 15 years. Impetigo is most common in children between the ages of 2 and 5 years.
Most strep A infections are not serious and can be treated with antibiotics. But rarely, the infection can cause serious problems. This is called invasive group A strep (iGAS).
If untreated, strep throat can cause complications, such as kidney inflammation or rheumatic fever. Rheumatic fever can lead to painful and inflamed joints, a specific type of rash, or heart valve damage.
While throat pain and fever are the most common and notable symptoms of strep throat, other signs of this bacterial infection may include: Body aches. Fatigue.
The CDC recommend that people with strep throat should stay home until they are fever-free for at least 24 hours and have been taking antibiotics for at least 1 day. People who do not receive treatment can remain contagious until they are better.
“Starting in September we saw this rapid increase in respiratory viruses we haven't really seen in the past few years, first in RSV, then in flu. Once the immune system is worn down from that, it's easier for strep to infect and cause complications,” Geevarghese says.
A viral sore throat is typically accompanied by other cold-like symptoms, such as cough, sneeze, runny nose and a hoarse or raspy voice. “A strep infection can make it feel very painful to swallow, and often comes with fever of 101-degrees or higher,” said Schairer.
Risk factors. Group A strep pharyngitis can occur in people of all ages. It is most common among children 5 through 15 years of age. It is rare in children younger than 3 years of age.
Strep throat is typically a mild condition, but the infection can be very painful. Your sore throat may be severe and very uncomfortable. The lymph nodes in your neck may be very tender and swollen. You may have pain when swallowing.
Your doctor may perform a rapid antigen test on a swab sample from your throat. This test can detect strep bacteria in minutes by looking for substances (antigens) in the throat. If the test is negative but your doctor still suspects strep, he or she might do a throat culture.
Rapid strep test kits are available over the counter at drugstores and do not require a doctor's prescription. These tests are quick and easy to use, giving you results in as little as five minutes. It works just like a rapid test that doctors perform.
People with strep throat should stay home from work, school, or daycare until they no longer have a fever and have taken antibiotics for at least 12 to 24 hours. This will help prevent spreading the bacteria to others. Wash your hands often to prevent the spread of germs that cause strep throat and other infections.
Take a Good Look
You might see white dots or patches in the back of your throat. Your tonsils -- the bumps on either side at the back of your throat -- might be red and swollen, too. These could be signs of bacterial infection like strep throat or oral thrush, or a viral infection like oral herpes or mononucleosis.
One key difference is that tonsillitis involves inflammation of the tonsils, while strep throat involves a specific bacterium infecting the throat. This could also affect the tonsils. Because of this, a person could have strep throat with tonsillitis at the same time.