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Bivalent COVID vaccine shows good Omicron protection while older version wanes --studies

Two studies published today measure the vaccine effectiveness (VE) of COVID-19 vaccines against laboratory-confirmed Omicron variant and subvariants and symptomatic disease. Vaccines that target the newer variants performed well, but primary vaccines offered rapidly waning protection from SARS-CoV-2 infections in the post-Omicron era.

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Analysis: Pandemic preparedness strategies must go beyond vaccines

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Once a pathogen of pandemic potential has emerged, an effective response that relies on medical countermeasures (e.g., prophylactic, therapeutic, and diagnostic technologies) must be deployed at scale immediately. Thus, medical countermeasures need to be readily available for use at the first signals that a pathogen of concern has surfaced.

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