Using an in-house indirect ELISA protocol for dIgA detection (18) on in-house pre-coated VL antigen plates and commercial plates, we observed the presence of anti-measles VL dIgA in levels as comparably high as IgM in two independent panels of confirmed acute measles serum/plasma samples (Fig. 1 and 2). The gene discussed is CD40LG; the disease is measles.