International Air Transport Association pushed back its prediction by one year due to the slow containment of the outbreak in the US and developing countries.The industry is seeing a rebound from the depths of the shutdowns in April, but the bad new is that any increase “is barely visible," IATA chief economist Brian Pearce said Tuesday during an online briefing for journalists.Pearce said that air travel is not rebounding along with rising levels of business confidence in Europe, the US and China.Traffic was down 86.5% in June from the same month a year ago, compared with a drop of 94.1% in April, measured as revenue passenger kilometers, or the distance travelled by all revenue-generating passengers.That improvement is “nowhere near the.