While US health officials warn most about the #Delta variant (#B16172, first seen in India) other #coronavirus variants are also gaining ground in parts of the US, among them the #Gamma variant, also known as #P1, which spread fast to dominate in Brazil. Coronavirus variants are what keep Dr. Scott Lindquist, an epidemiologist for Washington state, up at night. "I have got to be honest -- last thing I think about before I go to bed are the variants and the first thing I think