Egg abnormalities question

[my beautiful girls]

I have infectious bronchitis virus in my flock. I had one of the girls blood tested to confirm. They are 6 weeks post infection.

Only 4 out of 6 were affected. My 2 buff orphingtons have no symptoms or egg problems.

All were laying normal eggs prior to the virus.

My black australorp started laying eggs with extra calcium on the shells, then yesterday she was in distress and laid a white banded egg in middle of the run. This morning she laid egg yolk and albumen with no shell in nesting box.

My question is how can you have a banded egg, then just a yolk come out the next day?

Aren't banded eggs two shells touching in the shell gland?

Here are some pictures.

 

[Eggcessive]

My flock had IB virus years ago. I saw most of those egg shell defects afterward for years. In the following article you will see that many defective egg shell problems can be possible with IB effects, stress, and other causes:
https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

Since chickens with IB virus may be carriers for 5 months to a year, I got rid of it by waiting a year after my hens recovered to either hatch or buy new baby chicks.

 

[my beautiful girls]

My flock had IB virus years ago. I saw most of those egg shell defects afterward for years. In the following article you will see that many defective egg shell problems can be possible with IB effects, stress, and other causes:
https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

Since chickens with IB virus may be carriers for 5 months to a year, I got rid of it by waiting a year after my hens recovered to either hatch or buy new baby chicks.

@Eggcessive
after she laid the white banded egg, the next day she laid a shell less egg, just yolk and albumen, zero shell. she sat in nesting box this morning and didnt lay anything. acting like she is in distress again this evening. since her eggs were calcium coated excessively right before these banded and shell less eggs, do you think she needs a calcium supplement? I'm waiting to see what this next one looks like, she should be laying soon, most likely in the run, not the nesting box. thank you. extra calcium needed or is this IBV's fault?

well....she laid another white banded egg and just before some albumen/yolk came out of her vent so i am guessing she will lay the shell less egg tomorrow. guess I answered my own question.