This Guardian article reports that global supplies of salmon have been hit hard by a parasite affecting Atlantic farms meaning there could be as much as a 50% increase in salmon prices. Sea lice are infesting stocks in farms across Scotland and Norway, with rising sea temperatures claimed to be the cause. The consequences of reduced supply will contribute to cost push inflation however many U.K. supermarkets are said to be currently absorbing the initial price rises but some have engaged in 'shrinkflation' whereby consumers will continue to pay prices they are used to but for a smaller quantity. Whilst the economic consequences are not yet being felt fully and efforts are underway to treat the fish, the short run price of salmon is almost certain to rise very soon.
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