(CNN) - The Centers for Disease Control and Prevention is updating its guidance for cruise ship companies.
The conditional sail order is still in place and it’s not saying when operations can resume, but the CDC is providing more technical guidance.
It says companies will have to run practice cruises before inviting paying customers.
They have to include vaccinations and routine testing in their plans.
Cruise companies will also have to report any possible COVID-19 cases every day.
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