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Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Rep 2021 ; 34 (11): 108852 Nephropedia Template TP
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Virological and immunological features of SARS-CoV-2-infected children who develop neutralizing antibodies #MMPMID33730580
Cotugno N; Ruggiero A; Bonfante F; Petrara MR; Zicari S; Pascucci GR; Zangari P; De Ioris MA; Santilli V; Manno EC; Amodio D; Bortolami A; Pagliari M; Concato C; Linardos G; Campana A; Dona D; Giaquinto C; Brodin P; Rossi P; De Rossi A; Palma P
Cell Rep 2021[Mar]; 34 (11): 108852 PMID33730580show ga
As the global COVID-19 pandemic progresses, it is paramount to gain knowledge on adaptive immunity to SARS-CoV-2 in children to define immune correlates of protection upon immunization or infection. We analyzed anti-SARS-CoV-2 antibodies and their neutralizing activity (PRNT) in 66 COVID-19-infected children at 7 (+/-2) days after symptom onset. Individuals with specific humoral responses presented faster virus clearance and lower viral load associated with a reduced in vitro infectivity. We demonstrated that the frequencies of SARS-CoV-2-specific CD4(+)CD40L(+) T cells and Spike-specific B cells were associated with the anti-SARS-CoV-2 antibodies and the magnitude of neutralizing activity. The plasma proteome confirmed the association between cellular and humoral SARS-CoV-2 immunity, and PRNT(+) patients show higher viral signal transduction molecules (SLAMF1, CD244, CLEC4G). This work sheds lights on cellular and humoral anti-SARS-CoV-2 responses in children, which may drive future vaccination trial endpoints and quarantine measures policies.