What are the risk of Endocaditis if you have had a heart Valve repair few yrs ago and you have a fever, stomach gasteronteritis or Virus with Fever GP says I have risk and this can all lead to it, how true is this? Is the Bacteria in the Blood? Ideas

Low risk. The bacteria that cause intestinal infections are uncommon causes of endocarditis. No risk from viruses. Elevated risk depends on the kind of valve repair done, whether you have an artificial valve, etc. Increased risk is primarily from respiratory, skin, or dental infections -- and even with these, the actual risk of endocarditis is very low. Discuss with your cardiologist or cardiac surgeon.