Jenny I noticed you posted on July 9th. If it was contagious you probably would have caught it by now. Please do not worry too much. When its SV there will be Direah and vomitting as the stomach lining gets inflamed and rejects everything in it. Therefore, your husband was probably under the weather...you know men, he probably ate something gross...maybe undercooked, maybe old...maybe its this heat if the weather is hot where you are...could be a number of things and he would have suffered a lot more with SV. Hope you are feeling good and let us know !!