During the SARS-CoV-2 vaccination campaign, people with CF (pwCF) were considered a clinically vulnerable population. However, data on the immunogenicity of anti-SARS-CoV-2 vaccines in pwCF are lacking. We conducted a prospective study enrolling all patients aged > 12 and who were followed-up in our CF center and received two doses of the BNT162b2 vaccine in the period of March-October 2021. Blood samples were taken from them for the quantification of antibodies to the SARS-CoV-2 spike protein receptor binding domain immediately before receiving the first dose and 3 and 6 months after the second dose. We enrolled 143 patients (median age: 21 years, range: 13-38), 16 of whom had had a previous infection. Geometric mean antibody titer (GMT) 3 months after vaccination was 1355 U/mL (95% CI: 1165-1575) and decreased to 954 U/mL (95% CI: 819-1111) after 6 months (p < 0.0001). GMT was higher among previously infected patients as compared to those naive to SARS-CoV-2 (6707 vs. 1119 U/mL at 3 months and 4299 vs. 796 U/mL at 6 months, p < 0.0001) with no significant differences in the rate of decline over time (p = 0.135). All pwCF mounted an antibody response after two doses of the BNT162b2 vaccine, which waned at 6 months from vaccination. Age >= 30 years and the use of inhaled corticosteroids were associated with a lower humoral response. Between the second and the third doses, nine episodes of vaccine breakthrough infections were observed.

Immunogenicity of BNT162b2 mRNA-based vaccine against SARS-CoV-2 in people with cystic fibrosis according to disease characteristics and maintenance therapiesIn: BIOMEDICINES. - ISSN 2227-9059. - 10:8(2022 Aug 17), pp. 1998.1-1998.11. [10.3390/biomedicines10081998]

Immunogenicity of BNT162b2 mRNA-based vaccine against SARS-CoV-2 in people with cystic fibrosis according to disease characteristics and maintenance therapies

G. Alicandro
Primo
;
C. Rosazza;C.S. Sciarrabba;F. Ferraro;C. Lanfranchi;D. Girelli
Penultimo
;
C. Colombo
Ultimo
2022

Abstract

During the SARS-CoV-2 vaccination campaign, people with CF (pwCF) were considered a clinically vulnerable population. However, data on the immunogenicity of anti-SARS-CoV-2 vaccines in pwCF are lacking. We conducted a prospective study enrolling all patients aged > 12 and who were followed-up in our CF center and received two doses of the BNT162b2 vaccine in the period of March-October 2021. Blood samples were taken from them for the quantification of antibodies to the SARS-CoV-2 spike protein receptor binding domain immediately before receiving the first dose and 3 and 6 months after the second dose. We enrolled 143 patients (median age: 21 years, range: 13-38), 16 of whom had had a previous infection. Geometric mean antibody titer (GMT) 3 months after vaccination was 1355 U/mL (95% CI: 1165-1575) and decreased to 954 U/mL (95% CI: 819-1111) after 6 months (p < 0.0001). GMT was higher among previously infected patients as compared to those naive to SARS-CoV-2 (6707 vs. 1119 U/mL at 3 months and 4299 vs. 796 U/mL at 6 months, p < 0.0001) with no significant differences in the rate of decline over time (p = 0.135). All pwCF mounted an antibody response after two doses of the BNT162b2 vaccine, which waned at 6 months from vaccination. Age >= 30 years and the use of inhaled corticosteroids were associated with a lower humoral response. Between the second and the third doses, nine episodes of vaccine breakthrough infections were observed.
COVID-19; SARS-CoV-2; antibody response; cystic fibrosis; humoral response; vaccine
Settore MED/38 - Pediatria Generale e Specialistica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/938326
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