Incidence of Myocarditis Post-mRNA Vaccination

Mr Yip Hon Weng asked the Minister for Health (a) what are the latest statistics on incidence of myocarditis post-mRNA vaccination; (b) whether there has been a change in the incidence with the bivalent vaccines; and (c) whether the Government will make it mandatory for those involved in strenuous labour in the workforce to be given two weeks of light duty after their mRNA vaccination.

Mr Ong Ye Kung: For the period up to 31 December 2022, the reported rate for myocarditis is one per 1,000,000 doses for the bivalent mRNA vaccines, compared to 11 per 1,000,000 doses for the monovalent mRNA vaccines.

Since September 2021, MOH has advised individuals to avoid strenuous exercise or physical activity for two weeks following any dose of the mRNA vaccine as a precaution. The World Health Organisation and many international jurisdictions, including the USA and UK, do not recommend this unless there are symptoms post-vaccination.

Many work activities, such as walking and working while standing, are not strenuous and workers can continue with them as long as they are well. However, the level of physical exertion differs between jobs, settings and individuals. Employees and employers should discuss work arrangements so that employees can work safely after vaccination.