I saw the first chalk brood in any hive for the first time last week. We had a cooler period fro about a week two to three weeks ago. got warm again and then this past week it cooled again. This not only disrupted my preparations for rearing some queens but I suspect we will see another bout of chalk brood from it as well. Monday we where to introduce the first grafts to a cell builder we spent the last 10 days preparing. I am thinking it will be far to cool to get frames of emerged brood. We will see.