Experts say the Delta variant is 40% to 50% more transmissible than other variants, which means that unvaccinated people can more easily catch it and vaccinated people face a higher risk of a breakthrough infection.
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Infectious disease experts warn there is the potential for flareups with the presence of highly infectious variants and the risk of others emerging that could evade vaccines.
Jackson County will move down to moderate risk, with Polk County set to move to lower risk in the governor’s COVID-19 framework.
Although masks do provide some protection to the wearer, they are much better at preventing someone from spreading disease than they are at preventing someone from contracting it.
State officials still expect Oregon to reach a 70% vaccination rate for adults by the end of June.