Sac brood?

[Itchy]

Inspected one lethargic colony 14 days ago and there were dead larvae in the cells, red and greyish in colour, and were easily extracted from the cells. Check today, and no dead ones to be found, but a bit of sealed brood, no larvae, enormous queen seen, but no eggs. What do you think went on, and when should I be inspecting queen to resume laying? (If she will)?

 

[enrico]

Sac brood.... The larvae are on end, and the cells are not sealed, they then dry out to a brownish colour. Might have been sac brood and can be an indication of high varoa which would also explain why your queen is off lay. See what the drop is and treat with MAQS
Could it have been chalk brood? Doesn't sound like it but without photos not easy
E