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Literature update ViVa week 27-2026

1. JN.1 booster shows surprising reach: cross-hits BA.3.2.2 and keeps a monoclonal option alive In this short immunogenicity study, 25 adults receiving a monovalent JN.1 mRNA vaccine provided serum before and about 12...

Literature update ViVa week 26-2026

1. Avian influenza reaches European dairy herds – silent spread in cattle demands integrated surveillance A farm-based investigation in the Netherlands screened milk and serum from 72 lactating cows and 38 youngstock...

ViVa News — Week 26

Over the last week (≈23–29 June 2026), only a few jurisdictions and agencies released materially new vaccine guidance, with meaningful activity centered on COVID‑19 adult booster policy (Canada, Australia, New Zealand)...