If you're vaccinated, your unvaccinated family members are less likely to get COVID-19

Embargoed until: Publicly released: 2021-10-12 02:00

International

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The more people in a household are vaccinated or have immunity to COVID-19 from a previous infection, the less likely it is unvaccinated members of the household will become infected, according to international research. The study compared the COVID-19 infection rates in households of two to five people based on how many members had been vaccinated or developed some immunity from infection. For unvaccinated people living with one person with immunity, the chance of getting COVID-19 was 45 per cent to 61 per cent lower than in a fully unvaccinated household, the researchers say. With two immune people, they add, the risk was 75 per cent to 86 per cent lower, for three, 91 to 94 per cent lower and with all four other members immune, the risk was 97 per cent lower.