| Title: |
Durability of Humoral and Cellular Immunity after an Extended Primary Series with Heterologous Inactivated SARS-CoV-2 Prime-Boost and ChAdOx1 nCoV-19 in Dialysis Patients (ICON3) |
| Authors: |
Sarinya Boongird, Chavachol Setthaudom, Rungthiwa Kitpermkiat, Somsak Prasongtanakij, Supanart Srisala, Piyatida Chuengsaman, Arkom Nongnuch, Montira Assanatham, Sasisopin Kiertiburanakul, Kumthorn Malathum, Angsana Phuphuakrat, Jackrapong Bruminhent |
| Source: |
Vaccines, Vol 10, Iss 7, p 1064 (2022) |
| Publisher Information: |
MDPI AG, 2022. |
| Publication Year: |
2022 |
| Collection: |
LCC:Medicine |
| Subject Terms: |
COVID-19 vaccine, dialysis, immune response, inactivated SARS-CoV-2 vaccine, neutralizing antibody, SARS-CoV-2, Medicine |
| More Details: |
The durability of a three-dose extended primary series of COVID-19 vaccine in dialysis patients remains unknown. Here, we assessed dynamic changes in SARS-CoV-2-specific humoral and cell-mediated immunity at baseline, 3 months, and 6 months after the extended primary series in 29 hemodialyzed (HD), 28 peritoneal dialyzed (PD) patients, and 14 healthy controls. Participants received two doses of inactivated SARS-CoV-2 vaccine followed by a dose of ChAdOx1 nCoV-19 vaccine. At 6 months, median anti-RBD IgG titers (IQR) significantly declined from baseline in the HD (1741 (1136–3083) BAU/mL vs. 373 (188–607) BAU/mL) and PD (1093 (617–1911) BAU/mL vs. 180 (126–320) BAU/mL) groups, as did the mean percent inhibition of neutralizing antibodies (HD: 96% vs. 81%; PD: 95% vs. 73%) (all p < 0.01). Age and post-vaccination serological response intensity were predictors of early humoral seroprotection loss. In contrast, cell-mediated immunity remained unchanged. In conclusion, humoral immunity declined substantially in dialysis patients, while cell-mediated immunity remained stable 6 months after the extended heterologous primary series of two inactivated SARS-CoV-2/ChAdOx1 nCoV-19 vaccine. A booster dose could be considered in dialysis patients 3 months after this unique regimen, particularly in the elderly or those with a modest initial humoral response. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2076-393X |
| Relation: |
https://www.mdpi.com/2076-393X/10/7/1064; https://doaj.org/toc/2076-393X |
| DOI: |
10.3390/vaccines10071064 |
| Access URL: |
https://doaj.org/article/7e9cec59d681430ca3794372eeb40dbb |
| Accession Number: |
edsdoj.7e9cec59d681430ca3794372eeb40dbb |
| Database: |
Directory of Open Access Journals |
