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Pre-COVID-19 humoral immunity to common coronaviruses does not confer cross-protection against SARS-CoV-2

Miyara, M.; Sterlin, D.; Anna, F.; Marot, S.; Mathian, A.; Atif, M.; Quentric, P.; Mohr, A.; Claer, L.; Dorgham, K.; Parizot, C.; Yssel, H.; Chazal, T.; Fadlallah, J.; Haroche, J.; Benameur, N.; Boutolleau, D.; Burrel, S.; Mudumba, S.; Hockett, R.; Genalyte, C.; Charneau, P.; Calvez, V.; Marcelin, A.-G.; Amoura, Z.; Gorochov, G.

2020-08-15 infectious diseases
10.1101/2020.08.14.20173393 medRxiv
Show abstract

It is currently unknown whether acquired immunity to common alpha- and beta-coronaviruses provides cross-protection against SARS-CoV-2. In this study, we found that certain patient sera and intravenous immunoglobulins (IVIG) collected prior to the COVID-19 outbreak were cross-reactive to SARS-CoV-2 full-length Spike, S2 domain, and Nucleocapsid. However, their presence did not translate into neutralizing activity against SARS-CoV-2 in vitro. Importantly, we detected serum IgG reactivity to common coronaviruses in the early sera of patients with severe COVID-19 before the appearance of anti-SARS-CoV-2 antibodies. Collectively, the results of our study indicate that pre-existing immunity to common coronaviruses does not confer cross-protection against SARS-CoV-2 in vivo.

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