Pfizer, BioNTech Shot Recommended by CDC Advisory Panel

The transcript discusses the challenges of increasing vaccine acceptance in the US, with 38% of Americans still unvaccinated. The Biden administration is pushing for booster shots to combat waning vaccine efficacy, especially against the delta variant. The EU has imposed travel restrictions on US travelers due to high COVID-19 case rates, impacting the tourism sector.

How does the EU's travel restriction relate to COVID-19 case numbers in the US?

What impact has the Delta variant had on the tourism industry according to the text?