On the way to mandate booster vaccine dose of coronavirus disease 2019 for transplant recipients: A narrative review of literature

Coronavirus disease 2019 (COVID-19) vaccine efficacy, especially against severe disease is known to wane over time. We examined current knowledge of COVID-19 vaccine booster dose in solid organ transplant recipients (SOTR). We have systematically searched PubMed, EMBASE, MEDLINE, Scopus and Google Scholar with the following MeSH terms: "SARS-CoV-2 vaccine, " or "COVID-19 vaccine, " and "organ transplantation " and "booster " or "third dose. " This review article examines a number of studies including guidelines from professional societies examining the safety as well as increased immunogenicity of a booster dose among SOTR. Equitable distribution of vaccines across the globe is the need of the hour. While some countries are well into the booster dose phase, the lower-income countries are languishing behind with primary doses for their health workers. Available reports suggest less efficacy of COVID-19 vaccine in SOTR suggesting booster dose for them. Several studies highlighted the safety and efficacy of COVID-19 vaccines booster dose among SOTR. SOTR should also continue to adhere to all safety and COVID-19 appropriate behaviors. There is a growing need for alternative strategies to improve protection. As Omicron cases rise around the world, India announced that COVID-19 vaccination for children aged 15-18 years and "precautionary (booster) doses " would be administered to healthcare and frontline workers and people above 60 years of age with comorbidities from January 2022. In near future, with increased availability of vaccinations, all SOTR will have access to booster dose in a phased manner.