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Helen Chu Profile picture
Helen Chu
@HelenChuMD
Physician scientist @UWMedicine studying flu, RSV, and other emerging respiratory viruses
Jun 3, 2022 • 4 tweets • 2 min read
In this current surge, I've received lots of questions about risk of secondary household transmission from breakthrough infections in fully vaccinated individuals, and specifically about duration of isolation needed. A summary of two recent studies that shed light on this. The first is a study from the pre-Omicron period in South Korea, showing risk of secondary transmission of 7% in vaccinated vs. 26% in unvaccinated. The detection of viable (living) virus was 1.8 days in vaccinated vs. 4.4 days in unvaccinated. jamanetwork.com/journals/jaman…
Jun 11, 2021 • 7 tweets • 5 min read
In a new study in @JAMAPediatrics, we compared symptoms and viral load in children and adults with SARS-CoV-2. Those with symptoms had higher virus loads than those without. Importantly, within these groups – viral load was the same in children and adults. jamanetwork.com/journals/jamap… We wanted to see what was happening in the community, not only in hospitals and clinics. There has been a lot of debate around school openings and about whether children in the community could transmit the virus. We thought this study could help address some of these questions.