I'll tell ya, I am so tired of having sick chickens! I had a Marek's outbreak in October. 2 of my 14 week old pullets died, leaving my favorite girl as the only survivor. I got a confirmation of Marek's (but not how viral it is) through a necropsy. Once it looked good that my survivor Mabel was gonna make it, I got her 3 vaccinated same age flock-mates. It's been 15 weeks now that they've been here. My survivor started laying at the same time one of my vaccinated EEs did (Dec 17th) but then stopped a week later and hasn't laid since. My EE has laid daily since Dec 17th. A couple weeks ago, I started seeing symptoms of possible respiratory issues. It's been REALLY rainy here in SoCal and their run got soaked. I dug it out, closed the run in and made sure the run was dry soil. My survivor, Mabel started having REALLY loose stools, puffed up and was generally listless. my two EEs started sneezing. I started treating for Coccidiosis (it's day 4 today) with Corid and confirmed with a fecal. There's been no improvement in the diarrhea of the survivor yet, but I'm aware that it might be a secondary infection and it's possible that the stress of getting to POL could have caused her to succumb to Marek's. Today, my layer EE started limping and walking off balance intermittently. She also has an intermittent droopy wing. Her stool is just fine. They both are eating and drinking. I've separated both sickies and I'm wondering what I do now? Is Corid making my EE (who might not have Coccidiosis) sick? Is it a nutrient deficiency? What is going on with my poor chickies?!?!? Age: both 31 weeks Weight: Both 4lbs Symptoms: Mabel- Diarrhea, puffed up, hunched over and confirmed coccidiosis Tillie- Limping and droopy wing intermittently. When she takes a step all of her toes curl under her foot. Also started pulling feathers from other chicken's vents about 4 weeks ago (not sure if it's a symptom. she does it intermittently) Feed: Scratch & Peck grower feed milled to fine mash and moistened overnight (in fridge) to make sure they get all the fines. Oyster shell is provided free-choice and grit is available in the run free-choice and in the yard. Supplements: 1/4 clove crushed garlic for each chicken daily coated in probiotic yogurt for the last 10 days (since resp symptoms started) and 3-5 drops of food-grade oregano oil in feed. Last time wormed: Never. Have Safeguard Goat Dewormer which I was planning on using after Corid treatment Last egg layed: Mabel- Dec 24th Tillie- This morning They are both eating and drinking water. Do you guys think this is another Marek's outbreak or is it botulism, nutritional deficiency, worms, something else?