Is BioNTech vaccine effective against Delta virus?

Is the BioNTech vaccine effective against delta virus?
In the statement made by BioNTech, it was stated that the 3rd dose of the vaccine strongly increased the protection against the Delta mutation of Covid-19 that emerged in India. Authorities stated that a single dose of BioNTech vaccine provides limited protection against the Delta variant of Covid-19.

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The US pharmaceutical company Pfizer and the German biotechnology company BioNTech reported that the 3rd dose of vaccine against the corona virus (Covid-19) strongly increased the protection against the Delta mutation of Covid-19 that emerged in India. The effectiveness of vaccines against the delta variant was determined by a study conducted in England. It was stated that the BioNTech vaccine had 88 percent protection against the Delta variant.