Health officials say coronavirus vaccinations could become akin to yearly influenza shots The White House has unveiled plans for a new coronavirus vaccine booster that would be taken every autumn, as health officials say an annual jab could offer the best protection against the latest viral variants.

The US state of California’s power grid operator has declared an energy emergency, warning that it may institute rolling blackouts to curb a surge in demand, which has hit all-time record highs as residents crank up the AC to escape an unprecedented heat wave.

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