COVID-19 vaccination booking rates are low among younger people all across the world.making health authorities worried about whether they can achieve herd immunity.
One expert believes complacency could be one of the reasons behind the low rates of vaccination.
"I think maybe if that distrust is more like complacency because last year in the first phase of the pandemic, young people tended not to be affected severely. So very few young people ended up in hospital, let alone dying. But this year, we're seeing a lot of young people getting infected and that's just about every country in the world."
In South Korea in the 18-to-49 age group, around 23 percent of people have said 'no' to the vaccines.
And even if more young people were interested in getting vaccinatedthe current vaccine supply shortage is also making it difficult to reach the 70 percent threshold for herd immunity.
Rather, some experts think non-pharmaceutical methods would be more effective at containing the virus.
"We need to focus much more on the quarantine and isolation through the tracing and testing. However, increase the rebalance, need more human resources to work appropriately on this digital technology health then to reduce the work time. So it is now a time for a refocusing and key quarantine especially for quarantine and isolation method by the increasing the human resources rapidly"
They also say reaching a 70-percent vaccination rate will not be enough to allow the easing of restrictions and opening of borders nor is it enough to avoid fresh outbreaks.
"Iceland has the highest vaccination rates in the world. So it's well over 80% and more than 90% of people over the age of 70 have been fully vaccinated. And yet, Iceland is having the largest outbreak since the beginning of the pandemic."
However, he stressed that while vaccinations might not stop the spread, they can still prevent many from being hospitalized or dying.
Choi Won-jong, Arirang News.