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COVID infects all ages in family equally, but immunity plays a role

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Two new studies explore the risk of SARS-CoV-2 transmission among household members, one finding that children and adults are at similar risk and one showing that COVID-19–naïve family members' risk was 45% to 97% lower, depending on the number of members immune through infection or full vaccination.Transmission comparable across age groupsLate last week, a team led by Centers for Disease Control and Prevention researchers published interim data from an ongoing study in JAMA Pediatrics involving a convenience sample of 1,236 children and adults in 310 Utah and New York City households with at least one child.

Participants submitted self-collected nasal swabs for COVID-19 testing and completed symptom questionnaires each week from September

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