Nancy Guthrie disappeared from her home in Tucson, Arizona, in what authorities believe was an abduction.
More than 100 people, mostly children, have been killed by measles since mid-March, officials suspect.
Wales' picturesque landscape lends itself to sauna use, in a similar way to Finland, a business owner said.
The strike comes at the end of the bank holiday weekend and NHS managers fear demand could be "challenging".
The government has announced eight young futures hubs in areas with high anti-social behaviour.