We don't have the answer to that with only 1,000+ cases in the US. Peru where the variant was first identified has the highest deaths per million population of any nation at 5,876/million (compared to US at 1,897/million population)My first question would be, how resistant are humans to it?

Lambda Variant of COVID-19 Might Be Resistant to Vaccines
Investigators in Chile conclude that the lambda COVID-19 variant is not only more infectious than standard SARS-CoV-2, but could also possibly shrug off vaccines. The first case in the United States has been spotted at Houston Methodist Hospital.
Not too much info on the gamma variant either which is killing over 1,000 people a day in Brazil since mid-December 2020. They did reach a high of over 4,000 in April 2021, and the number of deaths has been going down but is still over 1,000 a day. Brazil has 20,066,587 total cases - 16,235,157 less cases than the US, but the US leads Brazil in total deaths by only 71,078

Jacksonville expert says gamma variant now classified as 'variant of concern'
Experts say the gamma variant was first identified in Brazil and was found in the U.S. in January.
