Effective treatment of strep infections with antibiotics significantly lowers a person's risk of developing rheumatic fever. Individuals with these infections should take their full course of antibiotics, even after symptoms are gone.
In 75% of people with rheumatic fever, the acute attack lasts only 6 weeks. Ninety percent of the cases of rheumatic fever resolve in 12 weeks or less. Fewer than 5% of people with rheumatic fever have symptoms that last for 6 months or more.
There are many possible complications as a result of rheumatic fever. They can include the following:
Rheumatic fever itself is not contagious and poses no risk to others. However, the streptococcal infection can be highly contagious.