Singapore’s NUHS study shows anti-malaria drug, throat spray reduce Covid-19 spread in closed, crowded settingsA member of the team behind the study taking blood pressure reading from a participant.
The study is the largest done so far internationally on Covid-19 preventive therapy involving these drugs. It was published in theSpeaking during a brief to the media on Friday, the study’s lead author Associate Professor Raymond Seet said that besides the vaccine, only two methods so far have proven effective in reducing the transmission of the coronavirus — wearing masks and social distancing.
The dormitory was chosen for the trial as it was still in the early stages of the Covid-19 outbreak, said Assoc Prof Seet, who is a senior consultant at the National University Hospital . “This can represent a viable preventive strategy for individuals living in a closed and high-exposure setting, especially in areas and countries where Covid-19 vaccination is not available or widespread,” he added.As part of the study, 3,037 migrant workers from Tuas South Dormitory aged between 21 and 60, with a mean age of 33, were recruited to participate in a randomised clinical trial.
While the cluster which consumed a combination of Vitamin C and zinc also had more than 20 per cent in absolute risk reduction, there was not enough statistical evidence to prove that the difference is not just due to luck, said Assoc Prof Alex Cook from the National University of Singapore’s Saw Swee Hock School of Public Health.
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