The probable interval between throat infection and onset of rheumatic fever is

Rheumatic fever is an acute, immunologically mediated, multisystem inflammatory disease that occurs after group A b-hemolytic streptococcal infections (usually pharyngitis, but also rarely with infections at other sites such as skin). Acute rheumatic fever occurs most often in children; the principal clinical manifestation is carditis. Neveheless, about 20% of first attacks occur in adults, with ahritis being the predominant feature. Symptoms in all age groups typically begin 2 to 3 weeks after streptococcal infection, and are heralded by fever and migratory polyahritis. (Robbins basic pathology,9th edition.pg no.391)