/b/veterinary-news/posts/elanco-increases-pack-size-of-its-pwd-vaccine Elanco has increased the pack size of its Coliprotec vaccine, which protects piglets against the F4 and F18 strains of E. Coli that lead to post weaning diarrhoea (PWD), to treat 200 piglets. Jack Fellows, Elanco swine sales leader, said: "With theen-USTelligent Community 10