Two weeks ago, Glanbia reported that four of its workers had tested positive for Covid-19 at its Ballitore factory in Co Kildare, the only cases made public so far in Irish dairy processing. I wrote in May that the industry was in good shape to survive the crisis, and results released by three of the main players in the past few weeks confirm this – which doesn’t mean that they are immune to change. While they took a hit from the pandemic, Glanbia and Kerry Group both showed resilience in their half-year results. One good indicator is that “Glanbia has…