S.Korea says Moderna reports 'production issue' as vaccination widens to 50s

People wait in line for a coronavirus disease (COVID-19) test at a testing site which is temporarily set up at a public health center in Seoul, South Korea, July 9, 2021. REUTERS/ Heo Ran

SEOUL (Reuters) - South Korea said on Monday it has been informed by Moderna of an unspecified production issue involving its COVID-19 vaccine, as the country expands its inoculation campaign for people aged 55-59 amid a fourth wave of infections.

It was not immediately clear what the production issue is, how much and long shipment will be impacted and whether other countries will be also affected by the problem.