We are getting a new puppy. My existing lab is one year old. My question is when I bring my new puppy home what precautions do We need to take while I take my one year-old lab out for walks? Or do we keep the 1 year old home until the pup is fully vaccinated? We walk miles several times a day in the hills, on horse trails and in parks (not dog parks). We want to avoid bringing home Parvovirus.