Serological inference of past primary and secondary dengue infection: Implications for vaccination by Lam, HM, Phuong, HT, Vy, NHT, Thanh, NTL, Dung, PN, Muon, TTN, Chau, NVV, Rodriguez-Barraquer, I, Cummings, DA, Wills, BA, Boni, MF, Rabaa, MA, Clapham, HE