A group representing nearly 500 bars in San Francisco has said that patrons who want to drink inside will have to show proof of vaccination or a negative COVID-19 test. The San Francisco Bar Owner Alliance told NBC News that its members will begin implementing the rule on July 29. The group polled its members prior to making the announcement and 85 percent said they support the move, the network reported. The group leaves the matter of enforcing the rule to individual owners. “We believe we are obligated to protect our workers and their families, and to offer safe space for customers to relax and socialize,” the group said in a statement, according to NBC. The announcement was made public the same day that California Gov. Gavin Newsom required state and healthcare employees be vaccinated or undergo weekly testing. A similar mandate is in place in New York City. “As …