Singapore’s Sembcorp Marine has again been hit by the coronavirus, with an asymptomatic yard worker testing positive during routine testing.

A fully vaccinated worker at Sembmarine’s Tuas Boulevard yard has tested positive for Covid-19, the sole 'dormitory' case in Singapore announced last Friday.

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The Indian national, simply referred to as case 62273, lives at SCM Tuas Lodge near to the offshore and marine yard in the west of Singapore. His infection is currently unlinked to any other case or cluster.

The 27-year-old worker, who is employed by Sembcorp Marine Integrated Yard, arrived in Singapore in October 2018.

His infection was detected on 19 April during rostered routine testing, and he was immediately isolated, said the Ministry of Health. A subsequent test the following day was also positive and the Sembmarine worker was then taken to the National Centre for Infectious Diseases.

He had already received both doses of the coronavirus vaccine and all of his prior routine tests had been negative, including one taken on 12 April.

"The Covid-19 vaccine is effective in preventing symptomatic disease for the vast majority of those vaccinated, but it is possible for vaccinated individuals to get infected,” said the ministry.

"Our existing key enablers – safe management measures, testing, and contact tracing – continue to be necessary and effective in helping us to mitigate spread and keep community transmission low."

Last week also saw another fully vaccinated foreign worker test positive for Covid-19. This 35-year-old male Bangladeshi national is employed as a construction supervisor by Prosper Environment & Engineering and he works at Sembcopmarine's Admiralty Yard, said the Ministry of Health.

Sembmarine in its 2020 Sustainability Report highlighted the measures it has introduced to "enhance the well-being and welfare" of all personnel at its workplaces. These measures include safe distancing, twice-daily temperature testing, "stepped up" disinfecting and cleaning at its facilities and regular routine swab testing for personnel on site.

Yards closed

Last April, as Singapore began to feel the force of the coronavirus pandemic, the contractor shut its Admiralty and Tuas yards to help curb the spread of Covid-19. These closures and the subsequent return to work with fewer staff took their toll on the schedule for many projects under construction.

Updated to include another Covid-positive worker and Sembmarine's measures to safeguard the health and safety of those at its yards in the wake of the coronavirus.