Overall, six studies provided data on the seroprevalence of IgM/IgG against NiV [19,27,37,61,62,63], eight studies reported on the outcome of occupationally acquired HCWs infections irrespective of their serology [16,18,30,31,32,64,65,66,67], and one study provided data on both the serology and outcome of sampled individuals [60]. The gene discussed is CD40LG; the disease is infection.