The consistent fall observed in India's daily count of cases and deaths between mid-September and October-end, did not persist in November.

A paper scheduled to be published in the peer-reviewed U.S. journal Health Factors has shown a strong corelation between testing intensity and reduced transmission of COVID-19.

The Moderna COVID-19 vaccine, which was recently demonstrated to have 94% efficacy, causes the human immune system to produce potent antibodies that endure for at least three months, a study showed on December 3.

The system would involve blockchain-based payment ecosystem, digital currency backed by Libra’s reserve of assets made up of cash equivalents and very short-term government securities, and governance by and independent Libra Association.