Seoul, April 27 (TIWN) South Korea will increase the Covid-19 vaccination rollout as the country has secured sufficient doses amid supply shortage concerns to achieve herd immunity by November, the country's acting Prime Minister said on Monday.

 In a public message, Prime Minister Hong Nam-ki sought to allay public concerns about a shortage of vaccines and slow progress in the inoculation rollout as the country is bracing for another wave of infections, Yonhap reported.