Geneva, July 12 (ANI): Mixing and matching COVID-19 vaccines from different manufacturers is a “dangerous trend” and could lead to chaos as there is limited data on it on the practice, World Health Organisation (WHO) chief scientist Soumya Swaminathan said on Monday.

Addressing a Covid-19 media briefing, Swaminathan said, “Really want to caution folks, because there is a tendency now for people in countries which enough availability of vaccines to voluntarily start thinking.”

“So it’s a little bit of a dangerous trend here where we’re in a data-free evidence-free zone as far as a mix and match there is limited data on mix and match. There are studies going on, we need to wait for that,” she added.