I actually like to heal villagers myself sometimes. I generally like to use 12-13 yr old children to do a lot of heaing when there is an epidemic because then I know that there will be adults with healing powers in case the there is an outbreak of illnesses when I have the game turned off.

But yes, when he throws a party any and all villagers who are ailing will feel better again.
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Why is it that if someone tells you that there are 1 billion stars in the universe you will believe them,
but if they tell you a wall has wet paint you will have to touch it to be sure?