Eric Clapton has given a performance in New Orleans at a venue that requires evidence of a COVID-19 vaccine or negative test result, effectively undoing the stance he took against such measures earlier this year.In July, Clapton vowed never to perform at a venue that required proof of vaccination, shortly after UK Prime Minister Boris Johnson announced that vaccine passes would be required to enter nightclubs and venues in the country, Clapton saying: “I reserve the right to cancel the show.”“I