Long-Term Humoral Immune Response in Persons with Asymptomatic or Mild SARS-CoV-2 Infection, Vietnam.
Mai HK., Trieu NB., Long TH., Thanh HT., Luong ND., Huy LX., Nguyet LA., Man DNH., Anderson DE., Thanh TT., Chau NVV., Thwaites G., Wang L-F., Van Tan L., Hung DT.
Antibody response against nucleocapsid and spike proteins of SARS-CoV-2 in 11 persons with mild or asymptomatic infection rapidly increased after infection. At weeks 18-30 after diagnosis, all remained seropositive but spike protein-targeting antibody titers declined. These data may be useful for vaccine development.