Medical research

Explaining vaccine clinical trial phases

Clinical trials are conducted in phases, each with slightly different objectives and increasing numbers of volunteers. This is primarily to ensure subject safety but also to make sure the process is as cost-effective as possible. ...

Vaccination

Brazil state signs deal to make Russian vaccine

The Brazilian state of Parana signed a deal Wednesday to test and produce Russia's new coronavirus vaccine, though officials stressed they would have to be sure of its safety and effectiveness first.

Medical research

New approach to treating osteoarthritis advances

The study results revolve around the long-established idea that machines within animal and human cells turn the sugars, fats, and proteins we eat into energy used by the body's millions of cells. The molecule most used to ...

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