I tested your bees and found what kind of looked like IAPV, Israeli Acute Paralysis Virus, but not quite. I took a picture of it with my I phone and sent it to my friend who is teaching me how to do the testing.
She says it is either KBV, Kasmire Bee Virus or BQCV, Black Queen Cell Virus. Both of them are mid gut viruses so the treatment is the same.
Go to your pharmacy and get a small bottle of 100 Mg B1 tablets. Take one tablet, crush it up and dissolve in a little hot water, when dissolved, add it to one gallon of 1 to 1 sugar water and feed it to your bees.
We recommend that you call your local inspector and see if he can have your bees tested, especially the larva.
I noticed that some of your bees are very small. Are you using very old, black comb? If so, as soon as it warms up, move it up to the super to allow the brood to hatch out and then remove it from the hive. If you have it, replace it with drawn frames.