Covid vaccination and the quest for herd immunity in Singapore

Poll suggests it would be challenging as over 20 per cent would refuse to be vaccinated

Evidence suggests that for herd immunity - the threshold at which the virus can no longer replicate in the population - to occur, roughly 70 per cent of the population would need to be immune, either through vaccination or through prior exposure. Giv
Evidence suggests that for herd immunity - the threshold at which the virus can no longer replicate in the population - to occur, roughly 70 per cent of the population would need to be immune, either through vaccination or through prior exposure. Given the low Covid-19 exposure rate in Singapore, having a vaccination level below 70 per cent may not be successful in stopping the spread of the disease, say the writers. PHOTO: REUTERS

Throughout the coronavirus pandemic, Singapore has relied on a series of stringent measures.

These include a near complete lockdown - termed the "circuit breaker" - as well as travel restrictions, quarantine measures, mandates on mask wearing, social distancing and extensive contract tracing.

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A version of this article appeared in the print edition of The Straits Times on October 24, 2020, with the headline 'Covid vaccination and the quest for herd immunity in Singapore'. Print Edition | Subscribe