Third Dose of mRNA Vaccination to Boost COVID-19 Immunity (mBoost Study)

Summary

300 adults ≥30 years of age who have previously received two doses of an inactivated COVID-19 vaccine at least 3 months earlier will receive a third dose with an mRNA vaccine (BNT162b2, BioNTech). Investigators will monitor reactogenicity and measure the immune response to the third dose.

Timeline

Start

2021-10-18

Primary completion

2024-03-31

Completion

2024-12-31

Publications

• Shiu EYC, Cheng SMS, Martin-Sanchez M, Au NYM, Chan KCK, Li JKC, Fung LWC, Luk LLH, Chaothai S, Kwan TC, Ip DKM, Leung GM, Poon LLM, Peiris JSM, Leung NHL, Cowling BJ. Durability for 12 months of antibody response to a booster dose of monovalent BNT162b2 in adults who had initially received 2 doses of inactivated vaccine. Vaccine. 2024 Dec 2;42(26):126317. doi: 10.1016/j.vaccine.2024.126317. Epub 2024 Sep 13.
• Leung NHL, Cheng SMS, Martin-Sanchez M, Au NYM, Ng YY, Luk LLH, Chan KCK, Li JKC, Leung YWY, Tsang LCH, Chaothai S, Kwan KKH, Ip DKM, Poon LLM, Leung GM, Peiris JSM, Cowling BJ. Immunogenicity of a Third Dose of BNT162b2 to Ancestral Severe Acute Respiratory Syndrome Coronavirus 2 and the Omicron Variant in Adults Who Received 2 Doses of Inactivated Vaccine. Clin Infect Dis. 2023 Feb 8;76(3):e299-e307. doi: 10.1093/cid/ciac458.

Drugs

Indications

No indication recorded.