Kristian G. Andersen is a Danish evolutionary biologist and professor in the Department of Immunology and Microbiology at Scripps Research in La Jolla, California.
[2][3] Andersen researched the 2015–16 Zika virus epidemic and gave comment on United States transmission through mosquitos.
[4] Early in the COVID-19 pandemic, Andersen and other scientists were consulted by the NIH and NIAID about the possibility of a lab leak.
[11] Republicans in the US House of Representatives have interpreted private communications between Andersen and other virologists who authored a paper on the proximal origin of SARS-CoV-2 and Anthony Fauci as a sign of mutual efforts to downplay the probability of a lab-leak.
[13][14] In his testimony, Andersen rebutted accusations against him and his coauthors, saying that changing their minds after considering new data was "textbook science in action".