As a vet, do I need to purify myself every time I touch articles that have been in contact with dogs? Will other pure articles become impure if I touch them after handling those articles?
Beside your medical hygiene , touching any dry item with your dry hands will not transfer any Nijasah (impurity) to you. If you touch a wet Najis item, or a dry wet item with you wet hands,by our hands will be Najis. If you touch other items with your Najis dry hands, it will not be impure.
Wassalam.