The Delta variant of SARS-CoV-2, which was identified as the reason behind breakthrough infections in the deadly second wave of coronavirus in India, has further mutated to form the ‘Delta plus’ or ‘AY.1’ variant. World Health Organisation, last month, tagged B.1.617.2 strain as the ‘Delta’ variant of SARS-CoV-2. “It has been seen in Europe since … Continue reading Delta variant of Covid-19 mutates into Delta Plus