2 ms·

The winter outbreaks in the northern hemisphere seem to disprove these conjectures: https://www.standard.co.uk/news/world/christmas-cancelled-gibraltar-vaccina

• somewhereoutth 5y ago
  They show that the current vaccines lose efficacy after about 6 months (unboosted). The grim calculation remains the same. Tragically, those most vulnerable were vaccinated first, so lost immunity just as vaccination programs were completed and we opened up.