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Not to a T — T-cell-based immunity may offer longer protection, but initial results are confusing. John Timmer - Jul 16, 2020 11:54 pm UTC Enlarge / T-cells attacking a cell recognized as foreign. Ultimately, the only way for societies to return to some semblance of normal in the wake of the current pandemic is…

new News24 app for more in-depth coverage of Covid-19 and its impact on South Africa and the world.

In addition to a rapid ramp-up of testing for the coronavirus, Minnesota will need a seriously scaled-up corps of people to retrace the steps — and personal contacts — of those who are infected before the state can begin to return to something approaching normalcy. They’re called “contact tracers,” and state plans estimate they’ll need…