13 augustus 2021, 16:14
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#2
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Banneling
Geregistreerd: 18 februari 2003
Berichten: 26.968
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Dat Covid-19 Endemisch zal worden is nu een zekerheid geworden :
Citaat:
Delta is transmissible enough that once precautions are lifted, most countries “will have a big exit wave,” Adam Kucharski, an infectious-disease modeler at the London School of Hygiene and Tropical Medicine, told me. As vaccination rates rise, those waves will become smaller and more manageable. But herd immunity—the point where enough people are immune that outbreaks automatically fizzle out—likely cannot be reached through vaccination alone. Even at the low end of the CDC’s estimated range for Delta’s R0, achieving herd immunity would require vaccinating more than 90 percent of people, which is highly implausible. At the high end, herd immunity is mathematically impossible with the vaccines we have now.
This means that the “zero COVID” dream of fully stamping out the virus is a fantasy. Instead, the pandemic ends when almost everyone has immunity, preferably because they were vaccinated or alternatively because they were infected and survived. When that happens, the cycle of surges will stop and the pandemic will peter out. The new coronavirus will become endemic—a recurring part of our lives like its four cousins that cause common colds. It will be less of a problem, not because it has changed but because it is no longer novel and people are no longer immunologically vulnerable. Endemicity was always the likely outcome—I wrote as much in March 2020. But likely is now unavoidable. “Before, it still felt possible that a really concerted effort could get us to a place where COVID-19 almost didn’t exist anymore,” Murray told me. “But Delta has changed the game.”
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