European shares have declined due to concerns about inflation, which is being driven by oil prices. This downturn is affecting various companies, with Novartis expected to have its worst day on record.

Further information about the decline in European shares and its impact on companies like Novartis is available from the source.

The source provides more details about the current situation and its effects on the market, including the specific challenges faced by Novartis and other companies affected by oil-led inflation woes.