More than a year has passed since people began receiving the first authorized COVID-19 vaccine in the US. By early January of this year,nearly 210 million people, or two-thirds of the eligible population, had received either 2 doses of an mRNA vaccine or 1 dose of an adenovirus vaccine ...
Pfizer's surprising news that its COVID-19 vaccine might offer more protection than anticipated—an announcement right after a fraught U.S. presidential election campaign—is raising questions about exactly how the different shots will make it to market. Pfizer Inc. and the maker of the other l...
For the COVID-19 pandemic, it is too late to go back and build these considerations into preclinical testing. However, it is imperative that researchers still in the preclinical phase incorporate head-to-head testing of their vaccine candidates in young versus aged animals and develop strategies ...
Still, even a vaccine 50 per cent effective is very worthy: it can cut the risk of infections or hospitalizations in half. Actually, the same vaccine could present different efficacies, depending on the event: for severe cases and hospitalizations, Astra Zenecareported 100...
Researchers have found that a single dose of either the Oxford-AstraZeneca or Pfizer-BioNTech vaccine is only around 30% effective against delta, although two doses are more effective: 88% for Pfizer and 67% for AstraZeneca.2 A preprint from Israeli researchers has reported that the risk of...
Studies that rely on natural exposure to SARS-CoV-2 are vulnerable to multiple variables that influence whether a vaccinee is exposed to SARS-CoV-2 and then whether exposure leads to infection (figure 2). For example, older participants could be more likely to avoid social gatherings or use ...
RegulatoryBest Places to WorkInfectious diseaseCOVID-19 Johnson & Johnson Family of CompaniesPfizerModerna, Inc.BioNTech Mark Terry MORE ON THIS TOPIC Layoff Tracker Stubborn Layoff Trend Continues Across Biopharma in 2024 December 23, 2024
Every vaccine is different, and it's not clear how long immunity for a COVID-19 vaccine may last. But the benefit of a vaccine is that it gets your immune system in fighting shape without making you sick. MORE: How will a COVID vaccine be distributed once it's approved by FDA? How...
The AP and other media outlets also downplayed the notion that DNA contamination in COVID-19 injections could contribute to cancer. “They are trying to make claims that this is not cancer-causing,” McKernan says, but “there are limits on how much DNA can be in a vaccine precisely beca...
In this Jan 26, 2021, photo provided by Susan Caraballo, Noemi Caraballo reacts after getting her first COVID-19 vaccine shot in Miami. Caraballo got her second dose on Tuesday, Feb. 16, and is looking forward to seeing friends, resuming fitness classes and running errands after nearly a ...