Science
2% of people carry 90% of COVID-19 virus, and roommates are safer than you think – CU Boulder Today
New research finds that only one in five college students who tested positive for COVID-19 while living in residence halls infected their roommates.

A lab scientist scans bar codes on saliva samples collected from members of the CU Boulder community. (Credit: Glenn Asakawa/CU Boulder)
A few super carriers with off-the-charts viral loads are likely responsible for the bulk of COVID-19 transmissions, while about half of infected people arent contagious at all at the time of diagnosis, suggests a new CU Boulder analysis of more than 72,000 test samples.
A second, related study lends further credence to the idea that viral load, or the amount of…
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