In infections >25 weeks, the percentage of B. malayi adults recovered were significantly increased (20-fold) in both mouse strains compared to gerbils ((CB.17 SCID median = 13%; median of absolute numbers of parasites recovered = 13, range = 0–49) BALB/c IL-4Rα-/-/IL-5-/- median = 10% (median of absolute number of parasites recovered = 14.5, range = 0–89) vs gerbils median = 0.5% (median of absolute number of parasites recovered = 13.5, range = 0–118), P<0.0001 Kruskal-Wallis with Dunn’s post-hoc test Fig 1E)). The gene discussed is IL5; the disease is infection.