British supermarket chains Sainsbury's and Tesco have issued critical safety warnings on multiple consumer products due to serious health hazards including bacterial contamination and allergen risks. Consumers are urged to immediately check their purchases for affected batch numbers, as contaminated items pose significant risks of foodborne illness. The recall encompasses various product categories including perishable goods and household items. Shoppers should verify packaging details and contact retailers for refund information if they've purchased recalled goods.

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