Does anyone know anything about the complications/side effects of Newcastle Vaccine? I heard the colds get worse...I am seeing this one week later. Is there any death rate for vaccinated chicks like with other vaccines, or is this one completely safe? Also, if they are to die from the vaccine, how long does it take? I did eye drop vaccine for Newcastle. I've been all nerves, for a week and it looks like I'm seeing problems just now....Thanks!