New Delhi, July 26 -- : The SARS-CoV-2 Delta variant of concern is now the dominant variant in most of Europe, the World Health Organisation (WHO) warned on Monday.

The European Centre for Disease Prevention and Control (ECDC), the WHO said that efforts to prevent transmission of the Delta variant must be reinforced.

The WHO Regional Office for Europe and the European Centre for Disease Prevention and Control (ECDC) shows that between June 28 and July 11 the Delta variant was dominant in the majority (19 countries) of the 28 countries that reported sufficiently complete genetic sequencing information," says a statement from WHO and ECDC.

"In these 19 countries, the median proportion of all nationally sequenced virus isolates detected tha...