Everyone has their own beliefs and prefrences, and you shouldn't force getting a vaccine on those who don't think they should. Respect others feelings, maybe you think that you should get the vaccine, and that it's good for you, but other people may not feel the same way, you should be careful about hurting people's feelings or making them angry, but you do whatever floats your boat :)
The reason is because the purpose of dance rituals in Iroquois culture is usually to ensure a good harvest and to appease the spirit of animals in which the dance was performed by the patient and paired conductors, dance leaders, and singers from opposite moieties