I'm Writing For My 59 Yr. Old Brother. He Does

I'm writing for my 59 yr. old brother. He does not have a computer so I'm checking here. For the last 4 days he has been experiencing loss of appetite, extreme fatigue (like it hurts to hold up a newspaper for any length of time or make it to the bathroom and back to a chair, stomach issues and sore throat (metallic taste, he says). 2 years ago he was hospitalized with E-coli for 5 days and on IV antibiotics. Minus the extreme head/neck pain previously experienced, this sounds like many of the same symptoms. Is it possible to have a recurrence? Also, he works in the food industry cooking raw chickens in mass quantities daily.