There's some exciting new research being undertaken by Dr Martin Nielsen a leading parasitologist at the University of Kentucky. This project involves a possible new method of equine parasite control using naturally occurring bacteria. You can sign up for more information via the attached link. There's also a Q&A section where you can post questions which Dr Nielsen answers personally. 

at http://equineparasitology.ca.uky.edu/.

Some interesting and exciting research happening over in the US. Check out the details of the innovative initiative on the following linkhttp://news.ca.uky.edu/article/equine-research-crowdfunding-project-launched

I have attached a list of the most common wormers with information about what they treat etc.  There is a website address at the top of the page which provides all the scientific data as well as details of wormers not listed on my "crib sheet".