Singapore coronavirus case shows vaccination doesn’t rule out infection. What does that mean?

Confirmation in Singapore of a migrant worker who contracted Covid-19 despite being fully vaccinated may have caused some alarm, but infectious disease experts said that this is an expected development and there is little cause for concern.On Sunday, the first such infection in Singapore was reported by the Ministry of Health (MOH). The 23-year-old male Indian national had received both required doses of the Covid-19 vaccination on January 25 and February 17. Similar cases around the world have…

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