St. Vincent and the Grendines' Chief Medical Officer, Dr. Simone Keizer-Beache, told the High Court on Wednesday that one person may have died as a result of being injected with the COVID-19 vaccine.
She was speaking on day one of the vaccine mandate lawsuit.
Her admission was contained in an affidavit she filed in support of the government's response to the legal challenge.
In her affidavit, the CMO said 53,852 doses of COVID-19 vaccines were administered in St. Vincent and the Grenadines by November 26 last year, with 25 documented reports of adverse effects.
She said of the 25 cases, two people required hospital admission while the others were managed without admission.
But she said the death of one person in January this year may have been due to serious adverse effects of the vaccine.
The patient was 55 years old and retired, with a history of an endocrine disorder.
The patient received the first dose of AstraZeneca in April 2021, and the second in May 2021.