From storage to transport, hurdles to getting Covid vaccine to N Koreans

North Korea has not responded to offers of aid from South Korea and international vaccine-sharing programmes, but prefers U.S.-made Moderna and Pfizer over China's Sinovac orUK's Astrazeneca shots

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As North Korea battles its first known Covid outbreak, a lack of storage, chronic power shortages and inadequately trained medical staff pose acute challenges to inoculating its 25 million people.