(CNN) A meat packing plant in Colorado where dozens of employees have contracted the novel coronavirus is closed for a deep cleaning and all workers will be tested before they can return to their jobs, officials said Friday.

The union that represents 3,000 employees at the JBS plant in Greeley said in a letter to state, county and company officials that two of its members have died.

The union says at least 50 employees are infected with the virus; the company, which is headquartered in Greeley, put the number of JBS workers with Covid-19 at 36.

The company said it was spending $1 million on test kits.

Vice President Mike Pence told reporters Friday his task force is moving Covid testing resources to the plant.

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