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UK Study: Delta Variant Can Infect Vaccinated People, Biden Wants Sept. Booster Shot Start - The St Kitts Nevis Observer

Researchers say implications for transmission remain unclear but reaching herd immunity even more challenging The research supports the idea that hitting the threshold for herd immunity is unlikely. Photograph: Guy Bell/Rex/Shutterstock Natalie Grover Science correspondent Guardian (UK)   Fully vaccinated adults can harbour virus levels as high as unvaccinated people […]