SINGAPORE — Swimming, cycling, jogging as well as ball and racket games were among the examples of strenuous physical activities listed by the Ministry of Health (MOH) that vaccinated individuals should avoid in the first week following their first and second COVID-19 jabs.
Housework, casual walking, and stretching, on the other hand, were deemed "safe", according to a newly released MOH advisory.
This supersedes an earlier advisory on 11 June that had recommended that vaccinated individuals, particularly adolescents and younger men, should avoid strenuous physical activity for one week after the second dose of the mRNA vaccines.
The new advisory comes as the ministry announced that they were investigating an incident involving a 16-year-old boy who suffered a cardiac arrest after lifting weights six days into receiving his first dose of the Pfizer-BioNTech COVID-19 vaccine.
Prior to his collapse on Saturday, the boy had been training with weights that were above his body weight, according to the MOH. He is currently hospitalised at the National University Hospital (NUH), where he remains in critical condition at its intensive care unit.
As of 30 June, there have been 12 reports of myocarditis and pericarditis occurring in individuals following their vaccinations with mRNA COVID-19 vaccines, according to the Health Sciences Authority's (HSA) third COVID-19 vaccine safety update released on Monday.
Five of the cases occurred in adults aged 30 years old and above.
The remaining seven involved males aged below 30 years old, higher than expected for the particular age group, based on background incidence rates.
"While most of the cases reported previously had occurred after dose two of their vaccination, the HSA had also started to receive reports of some cases that occurred after dose one," the expert committee on COVID-19 vaccination said on Monday.
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