<prompt> Secondary immune response is mediated byIgAIgGIgMIgE  <response>: Secondary immune response is mediated by IgG, IgM - Primary Immune response, IgA - Secretory Immunoglobulin found in glandular secretions and serum, IgE - Type I HS Reactions Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 96-98 