A traveler isolated for Covid-19 at a quarantine facility in New Zealand managed to infect three others across a hallway, researchers reported.
Closed-circuit camera footage, genetic testing and careful contact tracing show that the only conceivable way the virus could have passed from one room to another was in air that leaked out when both doors were briefly opened, the researchers said.It's a demonstration of how the virus can spread -- and of how well vaccines can work.
One person escaped infection: the vaccinated traveler."Despite sharing a room with four other persons with PCR-confirmed SARS-CoV-2 infection, person F never tested positive for SARS-CoV-2 by , testing negative on July 14, 18, 21, 27, 29, 31, and August 8, 14, 16, and 23," the team wrote. "Person F had received two doses of the Pfizer-BioNTech COVID-19 vaccine, but no other members of the travel group had been vaccinated.
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