Evidence continues to build for long-lasting immunity to Covid-19 following disease infection, with the publication of a new study showing a durable immune response as far as eight months after the initial onset of symptoms.

A dramatic increase in Covid-19 testing and tracing is needed in order to put the United States on a surer path through the pandemic. But that diagnostics increase comes with a significant price tag of about $75 billion from the federal government, the Rockefeller Foundation said in its latest report.

The Rockefeller Foundation laid out its COVID-19 Testing Action Plan as a fundamental step to reopen the United States.

There is a ban on conducting experiments on real human embryos after 14 days of growth, and researchers at Rockefeller University appear to have found a way to work around that ethical limitation.