Asia’s renewed surge in Covid-19 infections is compounding supply-chain blockages across the world’s biggest source of manufactured goods. After weathering earlier pandemic waves better than other regions, the fast-spreading delta variant has thrown into turmoil factories and ports in countries that were once among the most successful containing the virus. The snarls in Asia -- where the United Nations estimates around 42% of global exports are sourced -- risk twisting their way through global supply chains just as shipments would usually ramp up for the Christmas holiday shopping season. As earlier snags have shown, ... (full story)