Took my dog to his 2nd vet visit. He got distemper/parvo,corona,giardia… Next time, which ones should I repeat

When I got him he had distemper,parvovirus,parainfluenza,adeno… 2,bortadella. Just want to give him what is necessary. I know that Distemper he has one more shot and then he is ready for rabies (he will be 16 weeks next time), but the Giardia and Corona? Any others?