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CDC shifts pandemic goals away from reaching herd immunity
Changing the language to redefine 'herd immunity' and inserting a livestock (horse paste) reference.
Since the earliest days of the pandemic, there has been one collective goal for bringing it to an end: achieving herd immunity. That's when so many people are immune to a virus that it runs out of potential hosts to infect, causing an outbreak to sputter out.
Many Americans embraced the novel farmyard phrase, and with it, the projection that once 70% to 80% or 85% of the population was vaccinated against COVID-19, the virus would go away and the pandemic would be over.
Now the herd is restless. And experts at the Centers for Disease Control and Prevention have set aside herd immunity as a national goal.
Vaccines have been quite effective at preventing cases of COVID-19 that lead to severe illness and death, but none has proved reliable at blocking transmission of the virus, Jones noted. Recent evidence has also made clear that the immunity provided by vaccines can wane in a matter of months.
The result is that even if vaccination were universal, the coronavirus would probably continue to spread.
Many Americans embraced the novel farmyard phrase, and with it, the projection that once 70% to 80% or 85% of the population was vaccinated against COVID-19, the virus would go away and the pandemic would be over.
Now the herd is restless. And experts at the Centers for Disease Control and Prevention have set aside herd immunity as a national goal.
Vaccines have been quite effective at preventing cases of COVID-19 that lead to severe illness and death, but none has proved reliable at blocking transmission of the virus, Jones noted. Recent evidence has also made clear that the immunity provided by vaccines can wane in a matter of months.
The result is that even if vaccination were universal, the coronavirus would probably continue to spread.
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