TY - JOUR
T1 - History of primary-series and booster vaccination and protection against Omicron reinfection
AU - Chemaitelly, Hiam
AU - Ayoub, Houssein H.
AU - Tang, Patrick
AU - Coyle, Peter V.
AU - Yassine, Hadi M.
AU - Al Thani, Asmaa A.
AU - Al-Khatib, Hebah A.
AU - Hasan, Mohammad R.
AU - Al-Kanaani, Zaina
AU - Al-Kuwari, Einas
AU - Jeremijenko, Andrew
AU - Kaleeckal, Anvar Hassan
AU - Latif, Ali Nizar
AU - Shaik, Riyazuddin Mohammad
AU - Abdul-Rahim, Hanan F.
AU - Nasrallah, Gheyath K.
AU - Al-Kuwari, Mohamed Ghaith
AU - Butt, Adeel A.
AU - Al-Romaihi, Hamad Eid
AU - Al-Thani, Mohamed H.
AU - Al-Khal, Abdullatif
AU - Bertollini, Roberto
AU - Abu-Raddad, Laith J.
PY - 2023/10/6
Y1 - 2023/10/6
N2 - Laboratory evidence suggests a possibility of immune imprinting for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. We investigated the differences in the incidence of SARS-CoV-2 reinfection in a cohort of persons who had a primary Omicron infection, but different vaccination histories using matched, national, retrospective, cohort studies. Adjusted hazard ratio for reinfection incidence, factoring adjustment for differences in testing rate, was 0.43 [95% confidence interval (CI): 0.39 to 0.49] comparing history of two-dose vaccination to no vaccination, 1.47 (95% CI: 1.23 to 1.76) comparing history of three-dose vaccination to two-dose vaccination, and 0.57 (95% CI: 0.48 to 0.68) comparing history of three-dose vaccination to no vaccination. Divergence in cumulative incidence curves increased markedly when the incidence was dominated by BA.4/BA.5 and BA.2.75* Omicron subvariants. The history of primary-series vaccination enhanced immune protection against Omicron reinfection, but history of booster vaccination compromised protection against Omicron reinfection. These findings do not undermine the public health utility of booster vaccination.
AB - Laboratory evidence suggests a possibility of immune imprinting for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. We investigated the differences in the incidence of SARS-CoV-2 reinfection in a cohort of persons who had a primary Omicron infection, but different vaccination histories using matched, national, retrospective, cohort studies. Adjusted hazard ratio for reinfection incidence, factoring adjustment for differences in testing rate, was 0.43 [95% confidence interval (CI): 0.39 to 0.49] comparing history of two-dose vaccination to no vaccination, 1.47 (95% CI: 1.23 to 1.76) comparing history of three-dose vaccination to two-dose vaccination, and 0.57 (95% CI: 0.48 to 0.68) comparing history of three-dose vaccination to no vaccination. Divergence in cumulative incidence curves increased markedly when the incidence was dominated by BA.4/BA.5 and BA.2.75* Omicron subvariants. The history of primary-series vaccination enhanced immune protection against Omicron reinfection, but history of booster vaccination compromised protection against Omicron reinfection. These findings do not undermine the public health utility of booster vaccination.
KW - Multidisciplinary
U2 - 10.1126/sciadv.adh0761
DO - 10.1126/sciadv.adh0761
M3 - Article
SN - 2375-2548
VL - 9
JO - Science Advances
JF - Science Advances
IS - 40
M1 - adh0761
ER -