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What is herd immunity? How the COVID vaccine, rates work


PolitiFact s ruling: False
Here s why: Throughout the COVID-19 pandemic, the term herd immunity has been tossed around as a future benchmark of progress in the fight against the virus. For over a year, health officials and news organizations have analyzed what herd immunity means for COVID-19, and whether and when the United States might achieve it.
But we recently came across a post on Instagram that makes a series of problematic claims about the effectiveness of vaccines and the concept of herd immunity.
Notably, it asserts that the benchmark revolves only around vaccines and can’t realistically be achieved because, 100 percent of the population would have to be vaccinated for that to work. ....

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Real-world proof Pfizer and Moderna mRNA vaccines prevent SARS-CoV-2 infection


Real-world proof Pfizer and Moderna mRNA vaccines prevent SARS-CoV-2 infection
Several randomized placebo-controlled Phase III trials have shown that messenger RNA (mRNA) vaccines for COVID-19 effectively prevent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, the effectiveness of these vaccines in preventing asymptomatic and symptomatic COVID-19 infections is not well understood.
A new
Morbidity and Mortality Weekly Report published by the U.S. Centers for Disease Control and Prevention (CDC) states that mRNA COVID-19 vaccines are highly effective in preventing SARS-CoV-2 infection in the real world. The report is based on a CDC study where it routinely tested prospective cohorts of health care professionals, first responders, and essential and frontline workers for SARS-CoV-2 infections. ....

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