中国的现在的做法成本不比这里高，Doctors are now raising questions about extending quarantine to 18 days for those who are infected, and more regular COVID tests, even among vaccinated people. One Stanford doctor believes everyone should be getting testing 1-2 times per week.abc7news.com
The report also mentions the period of infection stemming from the Delta variant may be longer, indicating an infected person may be able to transmit the virus for 18 days, rather than 13 days. Wachter says this could raise questions about adding more quarantine and testing requirements.
“I think the central issue is that vaccinated people are probably involved to a substantial extent in the transmission of delta,” Jeffrey Shaman, a Columbia University epidemiologist, wrote in an email after reviewing the CDC slides. “In some sense, vaccination is now about personal protection — protecting oneself against severe disease. Herd immunity is not relevant as we are seeing plenty of evidence of repeat and breakthrough infections.”
The document underscores what scientists and experts have been saying for months: It is time to shift how people think about the pandemic.
Kathleen Neuzil, a vaccine expert at the University of Maryland School of Medicine, said getting more people vaccinated remains the priority, but the public may also have to change its relationship to a virus almost certain to be with humanity for the foreseeable future.
“We really need to shift toward a goal of preventing serious disease and disability and medical consequences, and not worry about every virus detected in somebody’s nose,” Neuzil said. “It’s hard to do, but I think we have to become comfortable with coronavirus not going away.”
专家已经绝望，呼吁Herd immunity is not relevant， 而转为防重症和死亡，not worry about every virus detected in somebody’s nose,” Neuzil said. “It’s hard to do, but I think we have to become comfortable with coronavirus not going away。