PEERAWAT LEEPRADITVAN, M.D.
PEDIATRIC CARDIOLOGY
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‘Streptococcus’ – A Name Many Have Heard During Outbreaks. Japan serves as a clear example: once infected, each individual’s body may respond to the bacteria in different ways, resulting in a range of diseases. Seeking prompt medical attention is essential and the illness should not be left to progress untreated, as rheumatic fever could develop.
Group A Streptococcus is a type of bacteria that causes pharyngitis (sore throat) and is transmissible through inhaling droplets from coughs or sneezes, as well as through direct contact or sharing items with an infected individual. This bacterium can result in a scarlet fever rash or more serious complications, such as rheumatic fever or nephritis.
Generally, Group A Streptococcus causes illness in two major forms:
These symptoms typically subside within a few days. However, in 2–3 weeks after recovery, children may be at risk of developing rheumatic fever.
Rheumatic fever is a complication that can arise following a Group A Streptococcus infection, particularly affecting children between the ages of 5 and 15. If the infection occurs in the throat or tonsils, the inflammation can spread to the heart muscle, pericardium, heart valves, and other organs such as the joints, brain, and skin.
Rheumatic fever can affect individuals of all ages, though infection often begins in childhood. Initial inflammation may progress to cause myocarditis (heart inflammation) and potentially lead to leaking heart valves. In chronic cases, this can result in valve stenosis and eventually heart failure. In some cases, the damage is severe enough to cause permanent heart defects, a condition known as rheumatic heart disease.
Patients who have had rheumatic fever are at risk of recurrence. Therefore, consistent adherence to prescribed medications—whether oral or injectable—is crucial in reducing the chances of recurrent episodes and potential complications.
Rheumatic fever itself is not contagious, but its cause—Group A Streptococcus—is. Prevention begins with simple hygiene practices such as wearing face masks, washing hands thoroughly with soap, maintaining appropriate social distance, not sharing personal items with infected individuals, and avoiding crowded places when possible.
In cases where preventive treatment should not stop before age 21:
In cases where preventive treatment should not stop before age 40 or should continue for life:
If a patient undergoes heart valve surgery due to rheumatic heart disease, lifelong prevention is required.
PEDIATRIC CARDIOLOGY