FIGURE 3.

Detection of the ADE effect of JEVpr4/DENV2 immune serum on DENV1–4 and ImDENV2 by real‐time PCR. The ADE of JEVpr4/DENV2 antibody on (A) DENV1, (B) DENV2, (C) DENV3, (D) DENV4 and (E) ImDENV2. The JEVpr4/DENV2 immune serum had the greatest enhancement effect on immature DENV infection, and had an obvious effect on DENV1. It had the lowest enhancement effect on the same type of DENV2. The enhancement effect on other types of mature DENV had a greater enhancement effect range, from 1:40 to 1:1280, reaching a peak at 1:80 to 1:320