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Pak Paimin has been thinking all the time what the list of possible causes could be. He started with a long list in his head and he even included the possibility this could be a new disease that no one had seen before. As his investigation progressed he started to cross things off his list or move them lower down on the list in terms of likelihood. In this case Pak Paimin doesn't think poisoning can be a cause as he has not identified anything in the history or on the farm that indicates possible access to poisonous plants or chemicals. From talking to Budi he doesn't think he would have overdosed these 2 cows on the worm treatment. There was no evidence to suggest the cows could have eaten large amounts of grain and the grass they have been eating is not rich and green. This rules out two more differential diagnoses. So, Pak Paimin's differential diagnoses contains;

• Bacterial enteritis - Salmonella, E-coli (most likely)
• Bovine Viral Diarrhoea Virus
• Parasites (least likely)

The two cows with diarrhoea have a fever and the diarrhoea is foul smelling and contains blood and what looks like bits of intestinal lining. These findings are strongly suggestive of salmonella infection, a bacterial infection that can cause diarrhoea and systemic infection. Before Pak Paimin leaves Budi's farm he sends a Response, Laboratory and Treatment reports to iSIKHNAS from his phone. Pak Paimin is not 100% certain of the diagnosis but he is pretty confident that the infectious agent is a bacterial infection causing enteritis and making the cows sick.