I had the same question when I was in my final year of undergrad- the only program I saw to require it was Environmental Epi at a a FEW universities, and even then it was only a semester- and only suggested, and not required. However, if you want to go to med school afterwards, you'll need a whole year🙂 My undergrad degree required a semester, so I did take it, but it wasn't required for the MPH programs I looked into (I'll be going to Columbia as an Epi, infectious disease concentration next year).