“The whole US is a superspreader event right now,” says Andrew Noymer, an infectious disease epidemiologist at the University of California, Irvine. … It could be weeks until epidemiologists are able to piece together the full ramifications of the Capitol riots on COVID-19 spread, if they do at all. It takes meticulous detective work to quantify the ripple effects of a gathering, Noymer says. … [One method] depends on people who were at the event coming forward and agreeing to participate in research. “Good luck getting these people to cooperate,” Noymer says.