LANSING, Mich. (AP) — Michigan on Monday ordered coronavirus testing of agricultural and migrant workers, citing nearly a dozen outbreaks at farms and food-processing plants in recent weeks.

Under the emergency order issued by the state Department of Health and Human Services, migrant housing camp operators must do initial baseline testing of all residents age 18 and older. New residents must be tested within 48 hours of their arrival, be provided separate housing and get a second test 10 to 14 days after arriving.

Agricultural employers with more than 20 workers on site at a time must also ensure testing — both for current and new employees and any workers with symptoms or suspected exposure to COVID-19. The requirement applies to meat, poultry and egg processing plants; greenhouses; and employers that hire migrant or season workers who do not live on site.