An interesting article on how hand sanitisers work, including some training material, can be found at this link.
In times of near mass hysteria and bulk buying of hand sanitisers and face masks as well as stocking large amounts of food, it is important to remember what we have in the arsenal to use in the fight against infectious diseases and how it works. The article also contains a great link to an article on Ignaz Semmelweiss who was the first to observe that doctors washing their hands before baby deliveries drastically reduced the number of women who died after childbirth. A timely reminder of the importance for hand-washing.