Tornadoes, historic cold across US kill seven, disrupt Covid-19 vaccinations

Killer tornadoes in the US Southeast and historic subzero cold as far south as Texas were blamed on Tuesday for seven deaths and massive power outages that cancelled Covid-19 inoculations and threatened to disrupt vaccine supplies.

Treacherous weather will maintain its grip on many parts of the United States from Tuesday through Friday, with up to four inches of snow and freezing rain expected from the southern Plains into the Northeast, forecasters said...