<prompt> True about Rheumatic hea disease and Rheumatic fever isare -Caused by group A streptococciCaused by group B streptococciCarrier have high risk of developing RFCarrier have low risk of developing RF  <response>: Ref: R Alagappan - Manual of Practical Medicine 4th Edition.pg no: 146 Rheumatic Fever Acute, recurrent, inflammatory disease, mainly of children aged 5-15 years, typically occurring 1-5 weeks after group A streptococcal infection. Pathophysiology 1. Cross reactivity of host antistreptococcal antibodies to cardiac antigens 2. Microbe initiated autoimmune reactivity. 