6 things to know about omicron’s risks on the job

Usually the day before symptoms start and the day symptoms appear are when people are the most infectious, said Sanghyuk Shin, director of UC Irvine’s infectious disease science initiative. … That means people can become highly infectious faster with omicron than with the previous variants. “This creates epidemic dynamics that are really hard to get in front of,” said Andrew Noymer, epidemiologist and [associate] professor of public health at UC Irvine. “Because it’s so rapid.”