This is true for many of the Biological and chemical weapons as well. Much of the training I have had, treatment listed for most was make them comfortable and treat for pain if possible. Not a lot you can do.
Here is some interesting tests that have been done.
The St Jo Program and Large Area Concept
The success of the first field tests only increased demand for more experiments. In response to an Air Force request, in 1953 the Chemical Corps created the St Jo Program and operatives staged mock anthrax attacks on St. Louis, Minneapolis, and Winnipeg. The bacteria were released from generators placed on top of cars, and local governments were told that "invisible smokescreen
The success of the first field tests only increased demand for more experiments. In response to an Air Force request, in 1953 the Chemical Corps created the St Jo Program and operatives staged mock anthrax attacks on St. Louis, Minneapolis, and Winnipeg. The bacteria were released from generators placed on top of cars, and local governments were told that "invisible smokescreen
nsing particles from airplanes to find out how wide of an area they would affect. The first Large Area Concept experiment, in 1957, involved dispersing microorganisms over a swath from South Dakota to Minnesota; monitoring revealed that some of the particles eventually traveled some 1200 miles away. Further tests covered areas from Ohio to Texas and Michigan to Kansas. In the Army's words, these experiments "proved the feasibility of covering large areas of the country with [biological weapons] agents."
Got Duct Tape?: The Truths and Tales of Biological Warfare