At periods between 12–25 weeks post-infection, the total percentage of B. malayi adults recovered from both immunodeficient mouse strains were significantly (>2-fold) higher than those recovered from gerbils ((CB.17 SCID median = 13% (median of absolute number of parasites recovered = 9, range = 0–29), BALB/c IL-4Rα-/-/IL-5-/- median = 13% (median of absolute number of parasites recovered = 12, range = 0–32) vs gerbil median = 5.9% (median of absolute number of parasites recovered = 21, range = 0–130), P<0.002 Kruskal-Wallis with Dunn’s post-hoc test, Fig 1E)). Here, IL5 is linked to infection.