TY - JOUR
T1 - Omicron infection following vaccination enhances a broad spectrum of immune responses dependent on infection history
AU - Hornsby, Hailey
AU - Nicols, Alexander R.
AU - Longet, Stephanie
AU - Liu, Chang
AU - Tomic, Adriana
AU - Angyal, Adrienn
AU - Kronsteiner, Barbara
AU - Tyerman, Jessica K.
AU - Tipton, Tom
AU - Zhang, Peijun
AU - Gallis, Marta
AU - Supasa, Piyada
AU - Selvaraj, Muneeswaran
AU - Abraham, Priyanka
AU - Neale, Isabel
AU - Ali, Mohammad
AU - Barratt, Natalie A.
AU - Nell, Jeremy M.
AU - Gustafsson, Lotta
AU - Strickland, Scarlett
AU - Grouneva, Irina
AU - Rostron, Timothy
AU - Moore, Shona C.
AU - Hering, Luisa M.
AU - Dobson, Susan L.
AU - Bibi, Sagida
AU - Mongkolsapaya, Juthathip
AU - Lambe, Teresa
AU - Wootton, Dan
AU - Hall, Victoria
AU - Hopkins, Susan
AU - Dong, Tao
AU - Barnes, Eleanor
AU - Screaton, Gavin
AU - Richter, Alex
AU - Turtle, Lance
AU - Rowland-Jones, Sarah L.
AU - Carroll, Miles
AU - Duncan, Christopher J.A.
AU - Klenerman, Paul
AU - Dunachie, Susanna J.
AU - Payne, Rebecca P.
AU - de Silva, Thushan I.
N1 - Publisher Copyright:
© 2023, Springer Nature Limited.
PY - 2023/12
Y1 - 2023/12
N2 - Pronounced immune escape by the SARS-CoV-2 Omicron variant has resulted in many individuals possessing hybrid immunity, generated through a combination of vaccination and infection. Concerns have been raised that omicron breakthrough infections in triple-vaccinated individuals result in poor induction of omicron-specific immunity, and that prior SARS-CoV-2 infection is associated with immune dampening. Taking a broad and comprehensive approach, we characterize mucosal and blood immunity to spike and non-spike antigens following BA.1/BA.2 infections in triple mRNA-vaccinated individuals, with and without prior SARS-CoV-2 infection. We find that most individuals increase BA.1/BA.2/BA.5-specific neutralizing antibodies following infection, but confirm that the magnitude of increase and post-omicron titres are higher in the infection-naive. In contrast, significant increases in nasal responses, including neutralizing activity against BA.5 spike, are seen regardless of infection history. Spike-specific T cells increase only in infection-naive vaccinees; however, post-omicron T cell responses are significantly higher in the previously-infected, who display a maximally induced response with a highly cytotoxic CD8+ phenotype following their 3rd mRNA vaccine dose. Responses to non-spike antigens increase significantly regardless of prior infection status. These findings suggest that hybrid immunity induced by omicron breakthrough infections is characterized by significant immune enhancement that can help protect against future omicron variants.
AB - Pronounced immune escape by the SARS-CoV-2 Omicron variant has resulted in many individuals possessing hybrid immunity, generated through a combination of vaccination and infection. Concerns have been raised that omicron breakthrough infections in triple-vaccinated individuals result in poor induction of omicron-specific immunity, and that prior SARS-CoV-2 infection is associated with immune dampening. Taking a broad and comprehensive approach, we characterize mucosal and blood immunity to spike and non-spike antigens following BA.1/BA.2 infections in triple mRNA-vaccinated individuals, with and without prior SARS-CoV-2 infection. We find that most individuals increase BA.1/BA.2/BA.5-specific neutralizing antibodies following infection, but confirm that the magnitude of increase and post-omicron titres are higher in the infection-naive. In contrast, significant increases in nasal responses, including neutralizing activity against BA.5 spike, are seen regardless of infection history. Spike-specific T cells increase only in infection-naive vaccinees; however, post-omicron T cell responses are significantly higher in the previously-infected, who display a maximally induced response with a highly cytotoxic CD8+ phenotype following their 3rd mRNA vaccine dose. Responses to non-spike antigens increase significantly regardless of prior infection status. These findings suggest that hybrid immunity induced by omicron breakthrough infections is characterized by significant immune enhancement that can help protect against future omicron variants.
UR - http://www.scopus.com/inward/record.url?scp=85168449143&partnerID=8YFLogxK
U2 - 10.1038/s41467-023-40592-4
DO - 10.1038/s41467-023-40592-4
M3 - Article
C2 - 37604803
AN - SCOPUS:85168449143
SN - 2041-1723
VL - 14
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 5065
ER -