Pfizer and Moderna's COVID vaccines may not work the same over time

Pfizer and Moderna's COVID vaccines may not work the same over time

Pfizer and Moderna's COVID vaccines may not work the same over time Recent data suggests that Moderna's coronavirus vaccine may maintain a higher effectiveness over time than Pfizer's. Why it matters: The effectiveness gap could always disappear with more data, and both vaccines remain very effective against severe disease. But if the gap does hold up, it raises questions about whether the two vaccines should be treated the same way policy-wise. Get market news worthy of your time with Axios Markets. Subscribe for free. Driving the news: Several studies — both preprints and those that have been peer-reviewed — have found a difference between the two vaccines' effectiveness over time, although some experts have cautioned that this could stem from flawed head-to-head comparisons. The studies have evaluated different measures of …
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