Ngai Sze Wong1,2, Bonnie C K Wong3, Jacky M C Chan4, Ka Hing Wong3, Owen T Y Tsang4, Chris K P Mok2,5, David S C Hui1,6, Shui Shan Lee1, Denise P C Chan1. 1. Stanley Ho Centre for Emerging Infectious Diseases. 2. The JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, Hong Kong, China. 3. Special Preventive Programme, Centre for Health Protection, Department of Health, Hong Kong Special Administrative Region Government. 4. Department of Medicine and Geriatrics, Princess Margaret Hospital. 5. Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Hong, China. 6. Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
Abstract
OBJECTIVE: People with HIV (PWH) co-infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are at higher odds of severe diseases. Whereas the immunogenicity of mRNA vaccine and adenovirus-vectored vaccine was similar between PWH in stable condition and healthy adults, the effects of inactivated vaccines are not known. DESIGN: Prospective longitudinal observational study in real-world setting. METHODS: Adult PWH in care and planning to receive either inactivated (day 0 and day 28) or mRNA-based (day 0 and day 21) vaccine against SARS-CoV-2 were recruited, with blood samples collected over 6 months for surrogate virus neutralization test (sVNT). Demographic and clinical data including age, sex, CD4 + cell count, and suppressed viral load (SVL) status were transcribed for analyses, by simple and multivariable linear regression models, and multivariable linear generalized estimating equations (GEE). RESULTS: A total of 611 HIV patients, 91% male patients, were recruited, of whom 423 and 184 have received mRNA-based and inactivated vaccine, respectively. The seroconversion rate was 99% for mRNA-based vs, 86% for inactivated vaccine [odds ratio (OR) = 21.56, P = 0.004]. At 6 months, mRNA-based vaccine continued to give a higher response (94 vs. 57%, P < 0.001). The temporal pattern varied between the two vaccines. By GEE, mRNA-based vaccine ( B = 40.59, P < 0.001) and latest SVL status ( B = 10.76, P = 0.01) were positively associated with sVNT level, but not latest CD4 + cell count. CONCLUSION: In HIV patients, inactivated vaccine gave a lower peak and shorter duration of sVNT responses compared with mRNA vaccine. The results suggested that different strategies may be needed in boosting the immunity in anticipation of the emergence of variants in the community.
OBJECTIVE: People with HIV (PWH) co-infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are at higher odds of severe diseases. Whereas the immunogenicity of mRNA vaccine and adenovirus-vectored vaccine was similar between PWH in stable condition and healthy adults, the effects of inactivated vaccines are not known. DESIGN: Prospective longitudinal observational study in real-world setting. METHODS: Adult PWH in care and planning to receive either inactivated (day 0 and day 28) or mRNA-based (day 0 and day 21) vaccine against SARS-CoV-2 were recruited, with blood samples collected over 6 months for surrogate virus neutralization test (sVNT). Demographic and clinical data including age, sex, CD4 + cell count, and suppressed viral load (SVL) status were transcribed for analyses, by simple and multivariable linear regression models, and multivariable linear generalized estimating equations (GEE). RESULTS: A total of 611 HIV patients, 91% male patients, were recruited, of whom 423 and 184 have received mRNA-based and inactivated vaccine, respectively. The seroconversion rate was 99% for mRNA-based vs, 86% for inactivated vaccine [odds ratio (OR) = 21.56, P = 0.004]. At 6 months, mRNA-based vaccine continued to give a higher response (94 vs. 57%, P < 0.001). The temporal pattern varied between the two vaccines. By GEE, mRNA-based vaccine ( B = 40.59, P < 0.001) and latest SVL status ( B = 10.76, P = 0.01) were positively associated with sVNT level, but not latest CD4 + cell count. CONCLUSION: In HIV patients, inactivated vaccine gave a lower peak and shorter duration of sVNT responses compared with mRNA vaccine. The results suggested that different strategies may be needed in boosting the immunity in anticipation of the emergence of variants in the community.