'Caution folks': Top WHO scientist flags 'dangerous trend' of mixing Covid-19 vaccines

'Caution folks': Top WHO scientist flags 'dangerous trend' of mixing Covid-19 vaccines 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. https://ift.tt/eA8V8J