tetano
Editor, Senior Moderator
Microbes Infect
. 2022 Sep 9;105044.
doi: 10.1016/j.micinf.2022.105044. Online ahead of print.
Factors influencing neutralizing antibody titers elicited by coronavirus disease 2019 vaccines
Yu-An Kung[SUP] 1 [/SUP], Sheng-Yu Huang[SUP] 1 [/SUP], Chung-Guei Huang[SUP] 2 [/SUP], Kuan-Ting Liu[SUP] 3 [/SUP], Peng-Nien Huang[SUP] 4 [/SUP], Kar-Yee Yu[SUP] 3 [/SUP], Shu-Li Yang[SUP] 5 [/SUP], Chia-Pei Chen[SUP] 5 [/SUP], Ching-Yun Cheng[SUP] 5 [/SUP], Ing-Kit Lee[SUP] 6 [/SUP], Shu-Min Lin[SUP] 7 [/SUP], Han-Pin Chang[SUP] 1 [/SUP], Yueh-Te Lin[SUP] 3 [/SUP], Yen-Chin Liu[SUP] 1 [/SUP], Guang-Wu Chen[SUP] 8 [/SUP], Shin-Ru Shih[SUP] 9 [/SUP]
Affiliations
Abstract
The World Health Organization has highlighted the importance of an international standard (IS) for severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) neutralizing antibody titer detection to calibrate diagnostic techniques. We applied an IS to calibrate neutralizing antibody titers (NTs) (international units/mL) in response to coronavirus disease 2019 (COVID-19) vaccination. Moreover, the association between different factors and neutralizing antibodies was analyzed. A total of 1,667 serum samples were collected from participants receiving different COVID-19 vaccines. Antibody titers were determined by a microneutralization assay using live viruses in a biosafety level 3 (BSL-3) laboratory and a commercial serological MeDiPro kit. The titer determined using the MeDiPro kit was highly correlated with the NT determined using live viruses and calibrated using IS. Fever and antipyretic analgesic treatment were related to neutralizing antibody responses in ChAdOx1-S and BNT162b2 vaccinations. Individuals with diabetes showed a low NT elicited by MVC-COV1901. Individuals with hypertension receiving the BNT162b2 vaccine had lower NTs than those without hypertension. Our study provided the international unit (IU) values of NTs in vaccinated individuals for the development of vaccines and implementation of non-inferiority trials. Correlation of the influencing factors with NTs can provide an indicator for selecting COVID-19 vaccines based on personal attributes.
Keywords: COVID-19 vaccines; international standard; neutralizing antibody titers.
. 2022 Sep 9;105044.
doi: 10.1016/j.micinf.2022.105044. Online ahead of print.
Factors influencing neutralizing antibody titers elicited by coronavirus disease 2019 vaccines
Yu-An Kung[SUP] 1 [/SUP], Sheng-Yu Huang[SUP] 1 [/SUP], Chung-Guei Huang[SUP] 2 [/SUP], Kuan-Ting Liu[SUP] 3 [/SUP], Peng-Nien Huang[SUP] 4 [/SUP], Kar-Yee Yu[SUP] 3 [/SUP], Shu-Li Yang[SUP] 5 [/SUP], Chia-Pei Chen[SUP] 5 [/SUP], Ching-Yun Cheng[SUP] 5 [/SUP], Ing-Kit Lee[SUP] 6 [/SUP], Shu-Min Lin[SUP] 7 [/SUP], Han-Pin Chang[SUP] 1 [/SUP], Yueh-Te Lin[SUP] 3 [/SUP], Yen-Chin Liu[SUP] 1 [/SUP], Guang-Wu Chen[SUP] 8 [/SUP], Shin-Ru Shih[SUP] 9 [/SUP]
Affiliations
- PMID: 36096357
- DOI: 10.1016/j.micinf.2022.105044
Abstract
The World Health Organization has highlighted the importance of an international standard (IS) for severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) neutralizing antibody titer detection to calibrate diagnostic techniques. We applied an IS to calibrate neutralizing antibody titers (NTs) (international units/mL) in response to coronavirus disease 2019 (COVID-19) vaccination. Moreover, the association between different factors and neutralizing antibodies was analyzed. A total of 1,667 serum samples were collected from participants receiving different COVID-19 vaccines. Antibody titers were determined by a microneutralization assay using live viruses in a biosafety level 3 (BSL-3) laboratory and a commercial serological MeDiPro kit. The titer determined using the MeDiPro kit was highly correlated with the NT determined using live viruses and calibrated using IS. Fever and antipyretic analgesic treatment were related to neutralizing antibody responses in ChAdOx1-S and BNT162b2 vaccinations. Individuals with diabetes showed a low NT elicited by MVC-COV1901. Individuals with hypertension receiving the BNT162b2 vaccine had lower NTs than those without hypertension. Our study provided the international unit (IU) values of NTs in vaccinated individuals for the development of vaccines and implementation of non-inferiority trials. Correlation of the influencing factors with NTs can provide an indicator for selecting COVID-19 vaccines based on personal attributes.
Keywords: COVID-19 vaccines; international standard; neutralizing antibody titers.