Aircraft passengers are up to three times more likely to contract the Omicron variant of the coronavirus compared to the Delta variant, a top medical adviser to the world’s airlines said on Tuesday. David Powell, physician and medical adviser to the International Air Transport Association, told Bloomberg that the relative risk of contracting the Omicron variant of the virus drastically increases for airline passengers, while recommending people get vaccinated and boosted. “Whatever the risk was with Delta, we would have to assume the risk would be two to three times greater with Omicron, just as we’ve seen in other environments. Whatever that low risk—we don’t know what it is—on the airplane, it must be increased by a similar amount,” Powell said. Powell, who is a former chief medical officer at Air New Zealand, urged passengers to take safety precautions when onboard flights, including avoiding common touch surfaces, washing and sanitizing hands whenever possible, social distancing, …