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“A reasonable worst-case scenario could see protection below 50 percent for the elderly and healthcare workers by winter,” he warned.
“With high levels of infection in the UK, driven by loosened social restrictions and a highly transmissible variant, this scenario could mean increased hospitalisations and deaths.”
Prof Spector added: “We urgently need to make plans for vaccine boosters, and based on vaccine resources, decide if a strategy to vaccinate children is sensible if our aim is to reduce deaths and hospital admissions.”
Why are elderly and healthcare workers at a greater risk?
As the team behind the ZOE COVID Study explained, those who had their second dose five to six months ago will be older or vulnerable due to other health reasons, placing them at increased risk of COVID-19 compared to those vaccinated more recently.
READ MORE: When will Covid boosters be available in the UK? All you need to know
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