Fish that are cultivated in pools or ponds are an increasingly important source of food around the world. Unfortunately, disease outbreaks can cause substantial losses in aquaculture. Fish farmers use vaccines to prevent disease outbreaks just like regular farmers, but vaccinating a fish is a lot harder than vaccinating a cow. The most effective way to vaccinate fish today uses needles, but there are several downsides to this process, both for the fish and the farmers. Now a team of researchers at MIT and the U.S. Department of Agriculture has developed a…
