Hypothetical question: If I come back from, say, south America for a trip and I find out that I have yellow fever, would I have to be quarantined or anything? could I be around friends and family without spreading the disease? Could I stay at home or would I have to be hospitalized? It s not that I have yellow fever, a couple friends and I are doing a project on a certain disease, and we chose yellow fever. Thank you SOOOOO much for your help!