“…The antibody response to T. vaginalis infection is well documented and includes circulating serum and cervicovaginal immunoglobulin A (IgA), IgG, and IgM (8,19,83,113,114,118,119). However, these antibodies appear to provide only limited protection from invading parasites, and antibody titers progressively dwindle after infection is eradicated by treatment (44).…”