Its always best to speak to your vet and follow their advice, but as a rule of thumb, youll be able to take your puppy out for a walk 2 weeks after their second jab. Before your puppy receives their vaccinations, they are susceptible to picking up infectious diseases and dangerous viruses, such as parvo virus and distemper , because they do lots of licking and sniffing as they get to know their new surroundings.