A shortage of shipping containers has driven up freight costs massively for seafood importers to the United States and Europe.

A year ago with the COVID-19 epidemic in China threatening to spread well beyond Asia, seafood companies in Europe and the United States faced delays in getting containers of frozen processed products back because they were held up by backlogs at Chinese ports working at reduced capacity because of lockdowns or illness among the workforce.

But now the situation has turned on its head.