group
first: simon. idiot probably thought covid was a hoax so he would keep going out and seeing his friends, at least until he got the illness, and then spent two weeks wheezing by himself in his room.
second: tie for Selene and Felicity. Selene is Simon's sister, but Felicity is his girlfriend, so it really just depends. honestly, probably Felicity, because she also has three younger brothers who probably wouldn't understand the safety measures.
third: Raj. he dove to get a job as an essential worker (at a grocery store or something) so even though he kept very safe, he still got it. it was inevitable.
fourth: Eli. he wouldn't quit his sports team and his parents still went out places so he ended up contracting it.
who didn't get it: Darra! she stayed safe the whole time, she prioritized her health and quarantined the entire time so she managed to not get it.