(RTTNews) - BMO Capital Markets has downgraded Chipotle Mexican Grill Inc. (CMG) on concerns over the negative impact of African swine fever. "It has the greatest pork exposure in our coverage (estimated at 10%), and our work suggests that CMG realizes commodity inflation with little to no lag," BMO analyst Andrew Strelzik said. "This suggests that CMG could be among the earliest to realize the impacts of African Swine Fever, potentially as early as 3Q19," he added.