Delta plus variant: What it is and how it differs from other coronavirus strains By Austin Williams What you need to know about the Covid Lambda variant Dr. Purvi Parikh, an immunologist with Allergy & Asthma Network who is also a co-investigator with the COVID vaccine trials joined Good Day LA to talk about lambda variant. LOS ANGELES - South Korea’s Disease Control and Prevention Agency (KDCA) announced on Tuesday that it had detected its first two cases of a new "delta plus" coronavirus variant, Reuters reported. So far, reports of the new variant are limited, but there have been some cases identified in multiple countries including the U.K., Portugal and India.