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File: 1631445636660.jpg (154.96 KB, 1400x989, 427d41808f8d284590c808afba….jpg)

No. 549105

https://en.wikipedia.org/wiki/Marek%27s_disease#Prevention

TL:DR

When a vaccine is leaky, meaning it doesn't totally prevent infection or transmission, just lessens symptoms, it still allows the virus to replicate and mutate in vaccinated hosts, but more virulent mutations are selected for.

Marek's disease originally had a low mortality rate in unvaccinated chickens, after the leaky vaccine and generations of vaccine-resistant mutations, the virus now has a near 100% mortality rate in unvaccinated chickens.

No.549107

File: 1631445779170.jpg (138.15 KB, 707x1000, dude chromatic aberation l….jpg)


No.549108

You don't need to worry about the vaccine making you infertile, whatmin. You were never going to get a chance to breed anyway.

No.549113

dont see the issue when you can just vaccinate the chickens so that doesnt happen



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