Two early US programs successfully traced COVID case contacts One report details a massive NYC effort to probe 941,035 COVID-19 cases and follow up with their contacts. CIDRAP

A pair of new studies describe how two US jurisdictions quickly mobilized teams of contact tracers to identify and isolate people exposed to SARS-CoV-2, with a massive New York City effort finding 1.4 contacts per case and a college student-led Central Pennsylvania initiative that may have led to fewer symptomatic household infections.

High blood pressure went up even more early in the pandemic, study finds | CNN People in the US with high blood pressure saw their levels rise during the first eight months of the Covid-19 pandemic, a new study says. Jen Christensen CNN

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The US National Institutes of Health, which helped fund the study, said it is one of the most extensive looks at blood pressure trends from the beginning of the pandemic.

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https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2797782

Prevalence and Correlates of Long COVID Symptoms Among US AdultS

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Findings  In this cross-sectional study of more than 16 000 individuals, 15% of US adults with a prior positive COVID-19 test reported current symptoms of long COVID. Those who completed a primary vaccination series prior to infection were less likely to report long COVID symptoms.

...long COVID is prevalent and associated with female gender and older age...