Thank you arnie.
They are happy and running around playing & selling etc. I'm not getting them to do much, just letting them pick what they want to do. Their health bar has not improved, but I don't think they need a doctor .. yet. I'll save my money in case they change to sick, or all their bars drop.
I wonder if it's like weakened in the VV games? They take ages to improve with stews if it was low enough, but they always picked up, well my villagers always do.