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Posts tagged with "Infectious Diseases"

  • Covid-19

    Antibody-Dependent Enhancement

    I’ve had several questions about antibody-dependent enhancement, which has always been a worry as the coronavirus vaccines have been developed. I figured it might be worth a look at just what we know about it, why one might be worried, and why (on the other hand) one might be hopeful. The simple definition of ADE… Read More
  • Covid-19

    Autoantibody Problems

    Here’s a preprint from a large team at Yale with a close look at a less-studied aspect of coronavirus infection. It’s been well established by now that a feature of severe cases is a misfiring immune response (the “cytokine storm”, etc.), and one reason that fatality rates have been going down for hospitalized cases is… Read More
  • Covid-19

    Get Ready for False Side Effects

    We’re in the beginning of the vaccine endgame now: regulatory approval and actual distribution/rollout into the population. The data for the Pfizer/BioNTech and Moderna vaccines continue to look good (here’s a new report on the longevity of immune response after the Moderna one), with the J&J and Novavax efforts still to report. The… Read More
  • Covid-19

    Taking Two Different Vaccines?

    We seem to be heading for a world with multiple coronavirus vaccines in it, and right off, I have to say that that this is a very good situation. But it has its complications, and one that I know many people have been wondering about is, what if you get two different ones? That could… Read More
  • Clinical Trials

    Oxford/AZ Vaccine Efficacy Data

    As of this morning, we have a first look at the Oxford/AstraZeneca vaccine’s efficacy in clinical trials via press releases from both organizations. The number in the headlines says about 70% efficacy, but there’s more to the story. Here’s the landscape so far: we have results from Pfizer and from Moderna, both of them developing… Read More
  • Clinical Trials

    More Vaccine Data, in Advance of More Efficacy

    I know that it’s been a run of vaccine posts around here, but the numbers just keep on coming. Today we have two more papers to look at, both published in The Lancet. – The first is from the SinoVac inactivated virus effort (the CoronaVac vaccine). In this one, the virus is grown in Vero… Read More
  • Covid-19

    Vaccine Possibilities

    Now that we’re seeing that coronavirus vaccines are indeed possible (and are on their way), let’s talk about the remaining unanswered questions and the things that we will be getting more data on. Here are some of the big issues – it’ll be good to see this stuff coming into focus. I’ll put these into… Read More
  • Clinical Trials

    Moderna’s Vaccine Efficacy Readout

    As expected, we have more vaccine news this morning. And the news is good. Moderna reports that their own mRNA candidate is >94% effective (point estimate), with 95 total cases in the trial to date, split 90/5 between the control group and the vaccinated group. 11 of those were severe infections: all 11 in the… Read More
  • Clinical Trials

    Lilly’s Monoclonal EUA

    I’ve been meaning to write about what has to be called a regulatory mystery. Eli Lilly obtained an Emergency Use Authorization for its monoclonal antibody (bamlanivimab) against SARS-Cov-2, but (as detailed in this post) the dosage that they applied for was 700mg. Which is one-quarter of the dose that showed any efficacy against the primary… Read More
  • Covid-19

    Good News on T-Cell Response

    There are several recent preprints and publications that bear on the T-cell immunity story for the coronavirus pandemic, and I wanted to highlight these, since it’s been a big part of the story that’s needed more information for a long time now. Here, for one, is a multi-institute study from the UK. The authors are… Read More