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Editor's Viewpoint Products & Services
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MAR/APR 2022 MARCH/APRIL 2022 Issue 19
50-51
Issue 59
Covid Vaccine Effectiveness “Wanes” After Three Months Among Care Home Residents
Vaccination-acquired immunity against Covid-19 significantly wanes after three months among elderly care home residents, indicating that regular booster jabs may be required for this “vulnerable” group, according to preliminary findings from the Vivaldi study led by UCL researchers. Over than 15,000 care home residents were surveyed in 331 care homes across England between December 2020 and December 2021, with the results revealing that protection against hospitalisation and death fell by one-third three to seven months after vaccination. The decline is significantly greater than that
seen in younger people, where immunity against infection wanes, but protection against severe illness appears to be robust. The researchers found that two vaccine doses were effective at preventing 85.4% of hospitalisations and 94.4% of deaths among care home residents between two and 12 weeks after the second dose, but that this fell to 54.3% of hospitalisations and 62.89% of deaths at three to seven months after vaccination.
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