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To be fair, a few select vaccines in people are some amount leaky. (Most are sterile though, and Mareks vaccine is 100% leaky.) And basically, if your chickens are vaccinated they're more likely to live if they do catch Mareks. But I'm just way more comfortable with my chickens dying to help...

The vaccine does not cause Mareks. The vaccine can hide a Mareks infection but does not cause one. The vaccine is not even made with the same virus. It's made with the Mareks turkey virus.

But for serious, that whole moving thing is an actual very real concern. If there's been chickens on or near the property we move to it, it could be devastating. But that's just a risk you take when you move with ANY livestock and it's one of the many reasons why well cared for land is so...

It is a good question. I think almost everyone with an even partially unvacced flock is prepared to either go chickenless for a long time or immediately switch to a dramatically closed flock. For me right now I am about to move in the next few years. So basically I'd burn the coop to the...

Given that none of my chickens are vaccinated at this point if just one chicken dies suddenly I don't necropsy. But I know my flock well enough to see when any symptoms develop. The last death we had due to any sort of illness (rather than deliberate culling or predators) after 2 weeks of age...

Yeah it's that last possibility that matters here. Or, alternatively, the same possibility but with a great quarantine system. For example, if I bring chicks home that are unvaccinated and I quarantine them effectively until they are laying, I have a real chance of seeing Mareks develop before...

Also, gave a little glance at that study. It said 17% of children who were vaccinated AND showed symptoms were leaky. To be clear.... 100% of children infected and unvaccinated are leaky. If there was an 83% sterile Mareks vaccine I'd be ALL over that. It would be such an improvement. I would...

Like I said; for leaky vaccines in people the options are; Vaccine or genocide. Now it sounds like I know which one you prefer? (To be clear, I am saying yes chicken genocide. No people genocide.) Please keep your anti-vaxxing stuff away from my posts even if you think they support your cause...

TBH this is the first I've heard of a non shedding non leaky vaccine. It's in Canada which doesn't automatically mean it's in America. I'd love to see the research on it and see if it comes to the USA. If it does I'd be 100% on board but if it's real it's not well publicized in the US.

This is patently false and human beings are not chickens. Most human vaccines such as polio or measles produce a sterile immune response. This replicates natural immunity and produces a natural eradication of diseases. In many cases whole diseases have gone extinct from it. Additionally, people...

Like I mentioned before - it depends largely on your goals. Some people here have mentioned hatcheries suggesting that people don't vaccinate their chicks. I know one vet, personally, that says if you aren't keeping them as pets don't use the Mareks vaccine. But again, most vets aren't trained...

Your vet may not know much about chicken vaccines but also the Fowl Pox vaccine is different than the Mareks vaccine. Many professionals suggest you do NOT vaccinate your flock for Mareks. Some suggest not vaccinating at all. Additionally; Good dog breeders regularly remove sick dogs from their...

The vaccine, ultimately, prevents the symptoms only but not the actual infection. So basically, if a vaccinated chicken is exposed to Mareks it will catch the disease but not die. If an unvaccinated chicken is exposed to Mareks it will catch the disease and probably die. If an unvaccinated...

I've also never met anyone locally with it, but sometimes I wonder because if they are the sort to have vaccinated birds... How would I know if they have it? But most people I know with chickens are also unvaccinated so it'd be pretty obvious. Hence my deep skepticism over the statement most...

Yep. I'd rather take the nuclear option and wait 3 years than have a mareks flock. It would make progress towards getting rid of the disease if everyone did but most people just... Won't. So there it is. I think it would also be nice if Mareks were on the NPIP. And we had state sponsored...

I suspect that what we can all agree on is we are in desperate need of a sterile vaccine for Mareks or a massively successful anti-viral treatment or resistant breeding program. And then have the heck promoted out of it. And I wish more was being developed for it.

None of that seems like conclusive evidence that most back yard flocks aren't MVD free at all. Just because it's the most common infectious disease diagnosis doesn't mean it exists in most flocks. It's an infectious disease after all and something has to be the most common. What this does...

"Considering that there are probably few chicken flocks that are really MDV free" ??? What makes you think this is the case, out of curiosity? I hatch my own chicks and get ones from hatcheries and certainly none of my birds show any signs of Mareks. I think that if the majority of flocks...

I definitely think that vaccines would be more prevalent and used in back yard enthusiasts if they were cheaper. The salmonella vaccine for example. After shipping it'd be about $55 to have it shipped to my house. It's 1000 doses. Assuming it has a retention time long enough to last the two...

Right, it's about a lack of support for the salmonella vaccine. For example, if large hatcheries offered it I'd use it every time because they could USE all 5000 doses and the cost would be minimal. If it had widespread public support it would probably also be available in less expensive smaller...