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Table 1 Overview of the characteristics of the two case herds

From: Clinical problems due to encephalomyocarditis virus infections in two pig herds

  Herd A Herd B
Clinical signs Acute mortality, shivering Acute mortality, severe dyspnea
  preceding death prior to death
Affected production stage Farrowing unit Nursery unit
Age of affected pigs 3–12 days 8–10 weeks
Mortality rate in affected production stage (%) 22 30–40
Clinical signs in sows None None
Duration of problems 8 months 5 weeks