Vent Gleet?

[MRO919]

I came out this morning to start worming and she passed

It sounds like a majority of them are sneezing? Could it be upper respiratory?

 

[coach723]

I'm so sorry.
Yes, that's possible. Mycoplasma is very common. The treatment is usually Tylan or Tylosin, I would try that to see if it helps. Link below to one source. If that is what it is, the medication will treat the symptoms but it is not a cure. MG (mycoplasma gallisepticum) is chronic and symptoms can return, especially during times of stress, the birds become carriers. It's also very contagious, so if that is what is going on, no birds should leave your property. Even asymptomatic birds can be carriers.
If you can find a lab/vet to do it, they can test for it, either by swab or PCR test (blood sample).
You could also send this one in for a necropsy, and that would tell you for sure what happened and if it was MG would tell you.
More on mycoplasmosis here:
https://tvmdl.tamu.edu/case-studies/mycoplasmosis-in-backyard-chicken-flocks/

and here:
https://www.merckvetmanual.com/poultry/mycoplasmosis/mycoplasma-gallisepticum-infection-in-poultry

State lab list here, for necropsy:
https://www.metzerfarms.com/poultry-labs.html

Tylosin can be gotten here:
https://jedds.com/products/tylosin-powder?_pos=1&_sid=dca6bbccf&_ss=r