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The CDC in US have made an announcement of a change in policy for dealing with Sars-Cov-2 (the virus that can sometimes lead to covid19).
From a recent statement by Dr Jefferson Jones
“Thinking that we’ll be able to achieve some kind of threshold where there’ll be no more transmission of infections may not be possible,” Jones acknowledged last week to members of a panel that advises the CDC on vaccines.
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.
Now what our PM said the other week makes sense!
“double vaccination provides a lot of protection against serious illness and death but it doesn’t protect you against catching the disease, and it doesn’t protect you against passing it on."
The article also goes on to say, that the widely purported 75%, 80%, 90% and even 100% target immunity won't achieve herd immunity, because humans don't behave like a herd of animals, which is where the "herd immunity" phrase originated.
“Humans are not a herd,” Jamieson said.
The CDC’s new approach will reflect this uncertainty. Instead of specifying a vaccination target that promises an end to the pandemic, public health officials hope to redefine success in terms of new infections and deaths — and they’ll surmise that herd immunity has been achieved when both remain low for a sustained period.
www.latimes.com
From a recent statement by Dr Jefferson Jones
“Thinking that we’ll be able to achieve some kind of threshold where there’ll be no more transmission of infections may not be possible,” Jones acknowledged last week to members of a panel that advises the CDC on vaccines.
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.
Now what our PM said the other week makes sense!
“double vaccination provides a lot of protection against serious illness and death but it doesn’t protect you against catching the disease, and it doesn’t protect you against passing it on."
The article also goes on to say, that the widely purported 75%, 80%, 90% and even 100% target immunity won't achieve herd immunity, because humans don't behave like a herd of animals, which is where the "herd immunity" phrase originated.
“Humans are not a herd,” Jamieson said.
The CDC’s new approach will reflect this uncertainty. Instead of specifying a vaccination target that promises an end to the pandemic, public health officials hope to redefine success in terms of new infections and deaths — and they’ll surmise that herd immunity has been achieved when both remain low for a sustained period.
CDC shifts pandemic goals away from reaching herd immunity
Experts at the Centers for Disease Control and Prevention have set aside herd immunity as a national target for ending the pandemic.
www.latimes.com
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